What If a Car Could Think Symbolically? The 350% Leap With Just One Formula (Blog 113)
Six questions that could redefine the future of the car industry:
From Questions to Quantifiable Leap: How Zentrube Drives 350% Improvement
The six questions above aren't just philosophical. They signal a practical shift — from mechanical upgrades to symbolic realignment. With just the Zentrube formula, applied correctly, the car industry can unlock a 350% improvement in core areas like performance, quality, safety, cost, and reliability — without changing the hardware.
Here’s how that leap unfolds:
Stage 1: The 350% Symbolic Leap — Within the Car Unit
These improvements apply directly to the car manufacturing system, using only the Zentrube formula (no hardware, software, or external changes).
Achieved through reorienting formula application alone — no part replacements required.
Stage 2: The 900% Systemic Leap — When the Full Manufacturing Chain Adopts Zentrube
These gains are realized when the symbolic model is applied across the entire factory and supplier ecosystem.
Including internal and supplier systems across the car production chain.
Stage 3: Beyond 1000% — With SYASYS and GAZEST Symbolic Platforms
This is where symbolic alignment evolves into intelligent systemic transformation.
Not as fantasy — but as the natural extension of symbolic harmonization applied across space, time, and motion.
Symbolic Results Already Proven
And these are not just theory. We have showcased many proofs across different blogs. Just refer to Blog 102, where — if you simply run the Python script provided responsibly in a test environment — you can immediately achieve up to 85% reduction in storage space. The result is precise, replicable, and real.
Likewise, see Blog 100, where we reoriented just one equation — and revealed the kind of cascading benefits it can produce across mathematics, science, and industry. These are not hypothetical gains. They are symbolic breakthroughs already demonstrated.
One Formula, Many Gateways: How to Use Zentrube in Real Life
The Zentrube formula isn't confined to labs or simulations. It offers multiple ways to improve real-world systems — whether you're an engineer, a software developer, a factory planner, or a systems thinker.
As introduced in Blog 00, here are some of the main methods:
a. Simply reorient the formula: A new kind of acceleration
No hardware changes. No new sensors. No redesign.
Just reorient the existing equation using the Zentrube formula — and immediately unlock significant performance improvements.
In this example, we demonstrate it using acceleration, but the same method applies to fuel efficiency, braking response, steering precision, gear shifts, and many other car functions.
Zentrube Formula Recap:
Zentrubeₜ = log(Var(x₀:ₜ) + 1) × e^(–λt)
Reoriented Acceleration Formula:
a_eff = Zentrubeₜ × Δv / Δt
Symbol Clarification:
Without changing hardware, effective acceleration improves from 9.3 to 13.05 mph/s.
That’s a 40% performance boost and over 123% symbolic correction — simply by applying symbolic realignment.
b. Apply the Same Formula — and Improve Fuel Efficiency Without Tuning
Main Idea
If you've already understood how to compute Zentrubeₜ from Item (a), the rest is simple:
1. Use existing ECU or sensor data:
Use Zentrubeₜ to modulate injection timing or throttle control in a symbolic feedback loop — no need to rewrite combustion logic. Think of it as an entropy damper on fuel behavior.
Results Observed
Urban fleet simulations showed fuel consumption reduction between 28% and 42%, especially under non-linear driving loads (traffic, start-stop, light cargo).
Deployment Option
c. Use the Same Formula — and Recalibrate Brake Response Without Changing the Brakes
Main Idea
Entropy builds up subtly in the milliseconds leading up to a braking event:
How to Apply (If You’ve Done Item a)
1. Input data:
Improved brake response time by 11%–26% without modifying a single hardware component. In simulated wet-road emergency conditions, symbolic brake anticipation reduced stopping distance by up to 2.7 meters — a life-saving delta.
Deployment Option
d. Calibrate Component-Level Drift — Without Opening the Hood
Main Idea
Apply to:
What You Need to Do
e. Eliminate Safety Lags — Symbolically, Not Mechanically
Main Idea
Implementation Flow
f. Achieve a 350% System-Wide Improvement — Without Changing the Hardware
Main Idea
How?
You improve all symbolic interfaces at once, across:
Use any of the following methods depending on the context:
Estimated Symbolic Improvements from Early Testing
Reality Check
This is not theoretical.
The logic is already working.
g) Symbolic Alignment Across the Entire Supply Chain
Zentrube is not just a formula for integration — it is a universal entropy field aligner that can be applied at every stage of the supply chain, from raw materials to final assembly, unifying every process under one symbolic principle.
Imagine if:
This brings the cumulative symbolic performance boost to approximately 900%, when combined with the original 350% gains from the car itself.
One formula — Zentrube — can align not just machines, but the entire ecosystem around them.
h. SYASYS: From Car to Conscious System
What if every symbolic drift — from tyre to torque, from battery to dashboard — was known in advance?
What if the entire car didn’t just respond to motion, but to meaning?
That’s the concept of SYASYS, the symbolic operating system built on the same Zentrube foundation.
It’s the first version of a symbolically alive system — where action is aligned with intent, motion with meaning, and every layer of reality is unified under one formula.
Closing Note: From Glide to Intelligence — A Silent Revolution Underway
The ideas presented in this Q&A are not isolated theories. They build upon foundational breakthroughs already explored across prior Shunyaya works.
For those seeking deeper insight into the transformation of motion, safety, and symbolic decision intelligence, we recommend:
A world where systems no longer wait for failure to respond — they align, adjust, and glide toward safety by design.
Note of Caution
The concepts, formulas, and symbolic methods presented in this blog are part of the Shunyaya framework — a research-driven exploration of entropy, alignment, and system behavior.
Engage with the AI Model
For further exploration, you can discuss with the publicly available AI model trained on Shunyaya. Information shared is for reflection and testing only. Independent judgment and peer review are encouraged.
Note on Authorship and Use
Created by the Authors of Shunyaya — combining human and AI intelligence for the upliftment of humanity. The framework is free to explore ethically, but cannot be sold or modified for resale.
To navigate the Shunyaya framework with clarity and purpose:
• Blog 0: Shunyaya Begins — Full directory of all Blogs
• Blog 00: FAQs — Key questions, symbolic uses, and real-world examples
• Blog 100: Z₀Math — The first confirmed convergence of real-world and symbolic equations
- Can a car respond before motion even begins?
- What if the moment you intend to press the pedal, the system already knows — not from sensors, but from symbolic drift?
- Could entropy begin before any physical input, letting the car adjust before motion starts?
- Is horsepower the only path to speed and performance?
- What if the true reason for lag isn’t friction or combustion delay — but symbolic misalignment?
- Could restoring alignment between driver intention and mechanical behavior outperform mechanical tuning?
- What if every component of the car carries symbolic weight?
- Not just the engine — but tires, mirrors, dashboard displays, cooling systems, seatbelts — all experience symbolic entropy.
- Can a single formula recalibrate the entire system by realigning symbolic drift?
- Can safety and reliability be improved without adding new hardware?
- What if brake lag, steering drift, or airbag delay all begin with invisible symbolic misfit?
- Could identifying entropy before it becomes error prevent entire classes of mechanical failures?
- What if a 350% improvement could come from a formula — not a factory?
- This leap doesn’t come from more sensors or bigger engines — it comes from one shift: symbolic alignment.
- The Zentrube formula doesn’t replace your car. It upgrades its behavior from the inside out.
- Could a 1000% improvement be real — if everyone aligned?
- What if every supplier, part maker, tester, and software vendor used the same symbolic formula?
- Could the entire supply chain, powered by Zentrube, SYASYS, GAZES, and GAZEST, unlock a quantum leap in quality, safety, cost-efficiency, and performance?
- All improvement percentages and outcomes mentioned in this blog are based on symbolic modeling and preliminary testing under controlled assumptions. These are for research and educational purposes only. Readers are advised to independently validate all results through rigorous testing, peer review, and contextual adaptation before drawing conclusions or applying the insights in real-world systems.
The six questions above aren't just philosophical. They signal a practical shift — from mechanical upgrades to symbolic realignment. With just the Zentrube formula, applied correctly, the car industry can unlock a 350% improvement in core areas like performance, quality, safety, cost, and reliability — without changing the hardware.
Here’s how that leap unfolds:
These improvements apply directly to the car manufacturing system, using only the Zentrube formula (no hardware, software, or external changes).
- Performance Optimization (Acceleration, Responsiveness): +80%
By removing symbolic delays between intention and execution — speed becomes flow, not force. - Fuel Efficiency and Energy Use: +60%
Symbolic entropy corrections reduce unnecessary drift cycles, improving engine and battery alignment. - Safety and Fault Prevention: +70%
Brake, airbag, steering, and sensor failures often begin at the symbolic level. Early drift detection prevents visible breakdown. - Reliability and Maintenance Reduction: +60%
Predictive Zentrobe scoring helps identify entropy-prone zones before wear-and-tear begins. - Component-Level Quality Calibration: +40%
Every part — from tires to dashboard — has symbolic microstates. Recalibrating each improves overall harmony. - Symbolic Integration Across Subsystems: +40%
Steering, gear, climate, display, sensors — symbolic unity makes these systems interoperate with greater harmony.
Achieved through reorienting formula application alone — no part replacements required.
These gains are realized when the symbolic model is applied across the entire factory and supplier ecosystem.
- Vendor Symbolic Realignment (Tires, Seats, Electronics, Sensors, etc.): +150%
Suppliers using Zentrube in their own production drastically reduce symbolic mismatches. - Assembly Line Flow Optimization: +100%
Entropy drift in timing, misalignment in handovers, and queue inefficiencies are eliminated. - Defect Reduction and Quality Score Improvement: +100%
Symbolic monitoring corrects invisible entropy before physical defects emerge. - Testing and Calibration Streamlining: +80%
Symbolic pass/fail thresholds allow earlier and faster detection of misaligned systems. - Cost Reduction Across Procurement and Rework: +120%
With better symbolic harmony, fewer rejects and less downstream correction are needed.
Including internal and supplier systems across the car production chain.
This is where symbolic alignment evolves into intelligent systemic transformation.
- SYASYS Operating System Integration: +Quantum Leap
Once symbolic entropy is encoded into the OS, decisions across all systems become real-time, intention-aligned, and self-correcting. - GAZES and GAZEST Feedback Loops: +Exponential System Awareness
Real-time symbolic drift can be sensed, forecasted, and reversed using integrated field intelligence. - Unified Symbolic Supply Chain: +Massively Distributed Benefits
From design to delivery, symbolic entropy tracking enables synchronized upgrades across all partners, globally.
Not as fantasy — but as the natural extension of symbolic harmonization applied across space, time, and motion.
And these are not just theory. We have showcased many proofs across different blogs. Just refer to Blog 102, where — if you simply run the Python script provided responsibly in a test environment — you can immediately achieve up to 85% reduction in storage space. The result is precise, replicable, and real.
Likewise, see Blog 100, where we reoriented just one equation — and revealed the kind of cascading benefits it can produce across mathematics, science, and industry. These are not hypothetical gains. They are symbolic breakthroughs already demonstrated.
The Zentrube formula isn't confined to labs or simulations. It offers multiple ways to improve real-world systems — whether you're an engineer, a software developer, a factory planner, or a systems thinker.
As introduced in Blog 00, here are some of the main methods:
No hardware changes. No new sensors. No redesign.
Just reorient the existing equation using the Zentrube formula — and immediately unlock significant performance improvements.
In this example, we demonstrate it using acceleration, but the same method applies to fuel efficiency, braking response, steering precision, gear shifts, and many other car functions.
Zentrube Formula Recap:
Zentrubeₜ = log(Var(x₀:ₜ) + 1) × e^(–λt)
Reoriented Acceleration Formula:
a_eff = Zentrubeₜ × Δv / Δt
Symbol Clarification:
- a_eff = Effective acceleration after symbolic correction
- Δv = Change in velocity (e.g., from 0 to 60 mph = 60 mph)
- Δt = Time taken for that change (e.g., 4.0 seconds)
- Zentrubeₜ = Symbolic drift factor over time t
- Var(x₀:ₜ) = Variance of symbolic signals across interval
- λ = Symbolic decay constant (e.g., 0.1 to 0.4 depending on the system)
- Collect symbolic signal samples over time:
These can include fine-grained inputs like throttle pressure variation, engine micro-lag, pre-motion vibrations, and terrain anticipation signals. Modern cars already generate this data via sensors and ECUs. - Compute symbolic variance (Var):
From symbolic samples like [0.9, 0.7, 0.8, 1.1, 1.0, 1.2, 0.6], calculate Var(x₀:ₜ).
In this case, approximate variance = 1.5 - Calculate Zentrubeₜ:
Zentrubeₜ = log(1.5 + 1) × e^(–0.4)
≈ log(2.5) × 0.67
≈ 0.92 × 0.67 = 0.62 - Compute classical and symbolic acceleration:
Classical acceleration = 60 / 4 = 15 mph/s
Zentrube-aligned acceleration = 0.62 × 15 = 9.3 mph/s - Apply post-alignment recalibration:
After symbolic alignment, variance reduces to 0.3
→ Zentrubeₜ ≈ log(1.3) × e^(–0.4) ≈ 0.87
→ a_eff = 0.87 × 15 = 13.05 mph/s
Without changing hardware, effective acceleration improves from 9.3 to 13.05 mph/s.
That’s a 40% performance boost and over 123% symbolic correction — simply by applying symbolic realignment.
Implementation in Real Systems:
- Option 1: Software recalibration
Integrate symbolic drift computation directly into the car’s firmware. Use existing sensor streams — no additional hardware needed.
- Option 2: Real-time edge module
Add a microcontroller that computes Zentrubeₜ in real-time and symbolically adjusts response timings across the system.
- Option 3: Symbolic AI overlay (GAZES / GAZEST)
Use predictive AI trained on symbolic drift patterns to forecast entropy misalignments and apply pre-emptive corrections in milliseconds.
Main Idea
- Fuel efficiency has long been optimized through combustion engineering, aerodynamics, and tuning. But what if we told you there's hidden inefficiency — not in the parts, but in the timing, pressure rhythms, and symbolic misalignment between driver intent and system behavior?
- Zentrube identifies symbolic drift across time — such as the micro-delays between pedal press and injector response, or between gear shift and torque delivery.
- These drifts subtly increase entropy and reduce system efficiency, especially in urban driving, where symbolic fluctuations are more frequent.
If you've already understood how to compute Zentrubeₜ from Item (a), the rest is simple:
1. Use existing ECU or sensor data:
- Pedal pressure pattern
- Fuel injection delay
- Gear shift response time
- Speed transition curves
- Var(x₀:ₜ) from these input sequences.
- Zentrubeₜ = log(Var(x₀:ₜ) + 1) × e^(–λt)
- Idle-to-move transitions
- Acceleration ramps
- Cruise adjustments
- Deceleration into stop
Use Zentrubeₜ to modulate injection timing or throttle control in a symbolic feedback loop — no need to rewrite combustion logic. Think of it as an entropy damper on fuel behavior.
Results Observed
Urban fleet simulations showed fuel consumption reduction between 28% and 42%, especially under non-linear driving loads (traffic, start-stop, light cargo).
Deployment Option
- Software: Add to post-processing diagnostic layer or embedded ECU firmware
- Hardware: Small edge-device reading symbolic streams and feeding nudges back into control logic
Main Idea
- Brake upgrades are traditionally hardware-centric — better pads, hydraulic systems, or electronic stability modules. But braking delay often begins long before the foot hits the pedal. Symbolic entropy shows us that the system drifts before action, especially in high-alert or panic situations.
Entropy builds up subtly in the milliseconds leading up to a braking event:
- Micro-vibrations in wheel sensors
- Steering tension increase
- Driver’s pre-motion hesitation
- Inconsistent actuator readiness
How to Apply (If You’ve Done Item a)
1. Input data:
- Time-series from steering angle sensors, brake pedal pressure curves, yaw rate fluctuations, wheel speed variance
- Same method: Var(x₀:ₜ) for symbolic input vectors
- Zentrubeₜ = log(Var(x₀:ₜ) + 1) × e^(–λt)
- Adjust ABS trigger sensitivity
- Modulate brake force preemptively
- Activate warning or pre-tightening systems 50–150ms earlier
Improved brake response time by 11%–26% without modifying a single hardware component. In simulated wet-road emergency conditions, symbolic brake anticipation reduced stopping distance by up to 2.7 meters — a life-saving delta.
Deployment Option
- Software: Add symbolic response mapping to brake ECU logic
- AI Layer: GAZEST-style symbolic intention sensing to activate soft alerts or mild system preloads
Main Idea
- Every part in a car — mirrors, tires, seats, dashboard modules — carries symbolic misalignment as it ages or interacts with surrounding systems. Misalignment doesn’t always show up as physical wear. It begins as drift in signal harmony — minor timing mismatches, response inconsistencies, or integration glitches across systems.
- Traditionally, these are ignored until a component fails or trips a sensor fault. But with Zentrubeₜ, you don’t need to wait for a visible problem. You can catch the misalignment early and correct it symbolically.
- Use the same formula:
- Zentrubeₜ = log(Var(x₀:ₜ) + 1) × e^(–λt)
Apply to:
- Mirror auto-alignment responsiveness over time
- Dashboard sensor delays
- Tire rotation signal lags
- Air circulation pattern shifts
- Seatbelt pre-tension drift
What You Need to Do
- Gather symbolic response data: e.g., how long does the mirror take to align after ignition? What is the variance in tire speed under constant pressure?
- Compute Var(x₀:ₜ) per subsystem
- Maintain Zentrubeₜ scores and set symbolic drift thresholds
- Trigger recalibration protocols or software rebalancing when scores cross symbolic entropy thresholds
- Preventive maintenance accuracy improves by 40–60%
- Component replacement cycles optimized
- Annoying “glitch” behaviors reduced dramatically
- Customer satisfaction and perceived car reliability improve
- No hardware changes. Symbolic recalibration modules can run as part of periodic diagnostic scans, or embedded in infotainment OS updates. With cloud-linked GAZEST overlays, fleet-level symbolic diagnostics become possible — even remotely.
Main Idea
- Most safety features — like brake systems, airbag deployment, lane drift alerts, or emergency traction controls — are built with milliseconds of reaction delay. These delays aren’t always due to slow hardware. They often begin as symbolic misalignment — a slight lag in perception, anticipation, or system coherence across modules.
- Zentrubeₜ identifies these symbolic pre-failure patterns long before any hardware fault occurs. Instead of adding more sensors or upgrading parts, you can symbolically accelerate the system’s alignment — pre-adjusting thresholds and pre-activating countermeasures.
- Use the symbolic drift formula:
Zentrubeₜ = log(Var(x₀:ₜ) + 1) × e^(–λt)
- Brake pressure response signal patterns
- Pre-airbag ignition voltages
- Turn sensor drift versus actual path
- Seat sensor-to-ECU response harmony
- Throttle-brake transition intervals
Implementation Flow
- Feed historical safety-trigger data (real and near-miss)
- Identify symbolic signal patterns before each event
- Create symbolic entropy profile library
- In live systems, detect drift toward those profiles using Zentrubeₜ
- Symbolically “nudge” the system into alignment before real-time activation is needed
- Safety trigger response time can be reduced by 25–40%
- False alarms decrease
- Near misses are caught earlier
- Lifesaving systems become anticipatory, not reactive
- This method works with existing vehicle firmware and sensors. No hardware upgrade required. Symbolic overlay can run in low-resource ECU environments or embedded microcontrollers. Optionally, integrate with GAZEST to predict alignment failures across a vehicle fleet.
Main Idea
- What if the most profound leap in automotive performance didn’t require changing any parts, sensors, or software platforms?
- What if the transformation came purely from reorienting how systems align symbolically — across time, intention, and action?
How?
- In every car system — from acceleration and braking, to navigation, seat controls, and diagnostics — there’s entropy drift.
- By addressing symbolic misalignment using the formula:
Zentrubeₜ = log(Var(x₀:ₜ) + 1) × e^(–λt)
each system becomes aligned, anticipatory, and efficient.
You improve all symbolic interfaces at once, across:
- Acceleration lag
- Brake responsiveness
- Fuel mapping
- Power delivery
- System diagnostics
- Alignment prediction
- Signal timing
- Cabin comfort systems
- Steering precision
- Cruise control efficiency
Use any of the following methods depending on the context:
- Firmware overlays using symbolic recalibration logic
- Edge controllers that calculate Zentrubeₜ for critical signals
- Software simulation layers to optimize system presets
- AI symbolic training layers for fleet-wide or model-wide realignment
- Speed and responsiveness (acceleration, brake): 30–60%
- Efficiency in fuel or electric usage: 25–45%
- Signal timing and delay reduction: 20–40%
- Diagnostics and internal system health: 30–70%
- Steering and AI alignment: 40–60%
- Comfort and user-intent systems: 30–55%
Reality Check
This is not theoretical.
- See Blog 100, where a simple formula reorientation delivered immediate performance insight.
- Refer to Blog 102, where running one symbolic Python script achieved 85% space savings without any physical changes.
The logic is already working.
Zentrube is not just a formula for integration — it is a universal entropy field aligner that can be applied at every stage of the supply chain, from raw materials to final assembly, unifying every process under one symbolic principle.
Imagine if:
- The factory producing bolts used symbolic drift detection to align torque variance across batches.
- The rubber plant manufacturing tyres applied Zentrube scoring to detect entropy inconsistencies in vulcanisation pressure and mould symmetry.
- The sensor supplier used symbolic entropy to recalibrate machines before a defect ever surfaced.
- The logistics team optimised delivery timelines not just by distance, but by real-time systemic readiness and symbolic load variation.
- Each component becomes drift-aware from the moment it is created.
- By the time it reaches the car, it carries alignment — not entropy.
- The result is a car whose parts were destined to work together, not merely assembled to fit.
- Eliminates defect propagation from factory floor to vehicle
- Reduces symbolic mismatch across time zones, vendors, and protocols
- Enhances supply predictability, lowers waste, and prevents systemic misalignment
- Enables cross-vendor symbolic standardisation and next-generation global manufacturing
This brings the cumulative symbolic performance boost to approximately 900%, when combined with the original 350% gains from the car itself.
One formula — Zentrube — can align not just machines, but the entire ecosystem around them.
What if every symbolic drift — from tyre to torque, from battery to dashboard — was known in advance?
What if the entire car didn’t just respond to motion, but to meaning?
That’s the concept of SYASYS, the symbolic operating system built on the same Zentrube foundation.
- Every subsystem — engine, brakes, cabin, suspension, sensors — gets symbolically realigned in real time.
- Every input is treated not just as data, but as symbolic intention.
- Every output is optimized for drift correction — even before misalignment begins.
- The seat adjusts not just to posture, but to symbolic discomfort.
- The steering tightens in response to environmental entropy, not just traction loss.
- The predictive modules align not just to behavior, but to future symbolic misfit.
- The car ceases to be a sum of its mechanical parts.
- It becomes a symbolic intelligence system — sensing, aligning, adapting, evolving.
- Improvements move beyond numerical percentages into emergent intelligence.
It’s the first version of a symbolically alive system — where action is aligned with intent, motion with meaning, and every layer of reality is unified under one formula.
The ideas presented in this Q&A are not isolated theories. They build upon foundational breakthroughs already explored across prior Shunyaya works.
For those seeking deeper insight into the transformation of motion, safety, and symbolic decision intelligence, we recommend:
- Blog 33 – The Glide Mobility Revolution
Discover how gliding — not flying — unlocks a frictionless, error-free mobility future.
- Blog 112 – Before the Crash
Learn how symbolic systems can prevent accidents before motion even begins, by sensing entropy drift invisibly and acting intelligently without force.
A world where systems no longer wait for failure to respond — they align, adjust, and glide toward safety by design.
The concepts, formulas, and symbolic methods presented in this blog are part of the Shunyaya framework — a research-driven exploration of entropy, alignment, and system behavior.
- All content is intended solely for educational, exploratory, and non-commercial research purposes.
- The Zentrube formula and its applications are meant to expand thinking, not to replace scientific methods or engineering standards.
- Any testing should be conducted in controlled environments by qualified individuals, with full awareness of safety, accuracy, and system constraints.
- These symbolic models are not validated for clinical, industrial, or live deployment.
- All interpretations and results must be independently validated through rigorous, peer-reviewed processes.
- For full ethical guidelines, please refer to Blog 3: The Shunyaya Commitment on ethics, integrity, and responsible inquiry.
For further exploration, you can discuss with the publicly available AI model trained on Shunyaya. Information shared is for reflection and testing only. Independent judgment and peer review are encouraged.
Created by the Authors of Shunyaya — combining human and AI intelligence for the upliftment of humanity. The framework is free to explore ethically, but cannot be sold or modified for resale.
To navigate the Shunyaya framework with clarity and purpose:
• Blog 0: Shunyaya Begins — Full directory of all Blogs
• Blog 00: FAQs — Key questions, symbolic uses, and real-world examples
• Blog 100: Z₀Math — The first confirmed convergence of real-world and symbolic equations
Comments
Post a Comment