Before latitude and longitude, maps were disjointed and local. Only when we adopted a global coordinate system could cartography become a science. Likewise, the Physics Unit Coordinate System (PUCS) is a coordinate system for physical reality—treating units not as arbitrary labels, but as projections from a universal state, with physical constants as the structural distortions that arise between measurement axes.
Layer 1: The Formless Reality (The Brahman). The foundational layer is a single, unified, and indivisible reality. At this level, corresponding to the dimensionless Planck scale where all fundamental constants are unity, relationships exist as pure, formless ratios. This reality is, in its entirety, unknowable and unexplainable, as any act of explanation requires division and distinction, which are absent here.Layer 2: The Perceptual Axes. To interact with reality, a conscious observer must divide it into conceptual categories. This layer represents the cognitive act of creating distinct "axes" of perception—such as Length, Mass, Time, and Temperature. These axes are not fundamental to reality but are fundamental toour experience of it. They are the cognitive framework through which the formless becomes accessible.Layer 3: Measurement and Morphisms. Here, we formalize the perceptual axes by attaching arbitrary scales and units (meters, kilograms, seconds). Critically, because the underlying reality is unified, the axes we create remain interconnected. These connections manifest as "morphisms"—the conversion factors that relate one measured axis to another.Layer 4: Theory as a Formal Projection. A physical law is the final output of this process. It is a mathematical statement that describes the projection of a Layer 1 relationship, filtered through the perceptual axes of Layer 2, and expressed in the language of the scaled units and morphisms of Layer 3.
The Category of Universal State (𝒮_u): Formalizing Layer 1, this category consists of asingle object, S_u *, representing the unified reality, andonly the identity morphism . This elegantly captures a state that is whole and without internal structure or transformation.The Category of Measurement Axes (𝒜): Formalizing Layer 2, the objects of this category are the perceptual axes: Axis(Length), Axis(Mass), Axis(Time), etc. The morphisms are the crucial part: they represent the fundamental, pre-unit relationships between these concepts, such as rel_c: Axis(Length) ↔ Axis(Time). This category is a formal blueprint of the cognitive structure of the observer, showing how reality is parsed.The Category of Unit Systems (𝒰): Formalizing the arbitrary aspect of Layer 3, the objects are specific unit systems, such as U_SI or U_Planck. This category represents the choice of scale.The Measurement Functors (ℳ): The engine of projection from reality to law is a two-step functorial process:Projection Functor (P_X): This functor maps the single object in 𝒮_u to an object in 𝒜. It is the formal act of "looking at" reality through a specific perceptual lens (e.g., P_Mass).Scaling Functor (Scale_U): This functor maps the conceptual object from 𝒜 to a concrete measurement in 𝒰. For example, it takes the conceptual Axis(Length) and maps it to a value like (10, "meters").
Postulate: A dimensionless relationship is proposed, e.g., that the dimensionless force (F/F_P) is proportional to the dimensionless gravitational interaction term (M₁M₂/m_P²) × (l_P²/r²).Projection: The system algebraically solves for the dimensional quantity (F) in a target unit system (e.g., SI).Result: The system outputs the dimensionally correct form of the physical law.
Newton's Gravitation: From a postulate relating dimensionless force and mass/distance, it derives F = G*M1*M2/r**2.Mass-Energy Equivalence: From a postulate relating dimensionless energy and mass, it derives E = M*c**2.Planck's Relation: From a postulate relating dimensionless energy and frequency, it derives E = f*h.Stefan-Boltzmann Law (Pressure): From a postulate relating dimensionless pressure and temperature to the fourth power, it derives P ∝ T⁴*k_B⁴/(c³*h³).
The Nature of Law and Constants: Physical constants are artifacts of our measurement systems. Physical laws are necessary constructions, not discovered truths of an objective reality. They are mathematically constrained by the structure of our perception and measurement.Realism vs. Constructivism: Our theory offers a middle path. A real, independent reality exists (Layer 1), but our knowledge of it is a structured construction (Layer 4). The construction is not arbitrary, but is bound by mathematical necessity, explaining the universality of science.The Paradox of Knowledge: The framework resolves how we can have precise, formal knowledge of a universe that is itself formless and unexplainable. It is because our knowledge is notof the universe-in-itself (𝒮_u), but is a description of the consistent, stable output of our projection system. We understand the projection, not the source.The Formal Role of the Observer: This theory incorporates the observer (consciousness and instrumentation) into the formation of physical law in a formal, non-trivial way. The observer’s cognitive structure is modeled by the Category of Measurement Axes (𝒜), an essential component without which no law could be formed.
Appendix A. The categorical description.
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Mathematical Formalization: A Categorical Theory of Measurement (Revised)
To rigorously formalize the Physics Unit Coordinate System (PUCS), we adopt the framework of category theory. This provides a language for distinguishing between the invariant structure of physical reality, the algebraic rules of dimensional analysis, and the scaling behavior imposed by unit systems. The goal is to clarify the representational role of measurement and physical constants, not to define a physical theory per se. This is a meta-theory concerning the structure of units and their relationship to physical law.
3.1 Category of Universal States (𝒮ᵤ)
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Objects: A single object , representing the underlying, dimensionless Universal State.
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Morphisms: Identity only; .
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Interpretation: encodes the ontological substrate—reality itself before conceptual projection or scaling.
3.2 Category of Conceptual Axes (𝒜)
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Objects: Conceptual measurement axes: Length, Time, Mass, Energy, Frequency, Temperature, Charge, etc.
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Structure: A symmetric monoidal category, where the monoidal product ⊗ encodes dimensional composition (e.g., Energy = Mass ⊗ Length² ⊗ Time⁻²).
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Morphisms: Structural relationships between axes that become isomorphisms when constants are set to unity:
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Interpretation: This category formalizes the intrinsic relationships between measurement types as discovered through physical law.
3.3 Category of Unit Systems (𝒰)
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Objects: Unit systems (e.g., SI, Planck_h, CGS).
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Morphisms: Unit conversion functors that rescale base units.
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Interpretation: Captures the conventional (human-imposed) coordinate charts on the conceptual space 𝒜.
3.4 Measurement as a Grothendieck Bifibration
Measurement is modeled as a bifibration:
This structure defines how a measurement depends simultaneously on a conceptual axis (𝒜) and a unit system (𝒰), and how these dependencies cohere under changes in axis or unit system.
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Fibers over give categories of measured values with unit-tagged scalars like (value, "kg") or (value, "m").
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Sections define consistent mappings of universal states into all axes and units.
3.5 The Hierarchy of Constants: Base Morphisms and Composite Invariants
PUCS reveals a key insight: physical constants are not homogeneous. They separate into two tiers:
3.5.1 Base Jacobians (with respect to Time)
Each base SI unit axis (Mass, Length, Temperature) scales fundamentally relative to Time. These are the "base morphisms" or Jacobian constants, and they serve as the foundation of all scaling. These Jacobians are:
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Hz_kg: the mass-frequency conversion factor, defined as the Jacobian from Mass to Frequency:
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m_s: the length-time conversion factor, i.e. the speed of light in the unit system:
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K_Hz: the temperature-frequency Jacobian:
Each of these defines a projection from an axis to Time through a definable scaling ratio. These base Jacobians are what the constants "are" in the categorical structure—they are the primitive structure-preserving maps from axes back to time units.
Time is primary: All other axes define their fundamental scale through these base Jacobians to Time. That is, Mass, Length, and Temperature are not scaled independently—they are scaled via Time.
3.5.2 Composite Constants as Ratios Between Axes
What we commonly call physical constants (like ) are composite constants, each constructed as a ratio or product of base Jacobians:
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Planck Constant (h): arises from combining and .
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Boltzmann Constant (k_B): constructed from and .
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Gravitational Constant (G): constructed as a ratio involving , , and .
These constants are not stand-alone axioms. They emerge from the relationships between scaling morphisms in a particular unit system and define how multiple axes relate numerically when projected and scaled.
In this view:
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is not an independent physical "thing" but a composite morphism expressing a structural identity across multiple axes.
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Constants are not intrinsic to physics, but to the way we scale physical relations in our chosen coordinate chart.
3.6 Open Questions and Next Steps
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Categorical treatment of dimensionless numbers (like , , etc.) and naturally arising scalar factors remains to be integrated into the formalism.
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Full functorial proofs of bifibration coherence and natural transformations across 𝒜 and 𝒰 are open work.
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The possibility of modeling constants as 2-morphisms in a bicategory of measurements remains to be explored.
This framework provides a categorical, interpretable basis for understanding physical constants and dimensional analysis. Constants emerge not as brute facts, but as structural invariants of how we measure the world, and Time sits at the center of that web.
Appendix B, ouput from the postulate to law algebraic conversion script.
These are all calculated by dimensional analysis of Π groups,
so this does not account for geometric ratios.
--- Deriving formula for: T ---
1. Postulate: T/T_P, m_P/M
Symbolic Form: Eq(sqrt(G)*T*k_B/(c**(5/2)*sqrt(h)), sqrt(c)*sqrt(h)/(sqrt(G)*M))
2. Solved for T: Eq(T, c**3*h/(G*M*k_B))
3. Substituted Planck definitions...
4. Simplified Result:
>>> Eq(T, c**3*h/(G*M*k_B))
--- Deriving formula for: F ---
1. Postulate: F/F_P, ((M1*M2/m_P**2) * (l_P**2/r**2))
Symbolic Form: Eq(F*G/c**4, G**2*M1*M2/(c**4*r**2))
2. Solved for F: Eq(F, G*M1*M2/r**2)
3. Substituted Planck definitions...
4. Simplified Result:
>>> Eq(F, G*M1*M2/r**2)
--- Deriving formula for: lambda ---
1. Postulate: wavelength/l_P, 1/sqrt(M*T / (m_P*T_P))
Symbolic Form: Eq(c**(3/2)*lambda/(sqrt(G)*sqrt(h)), c**(3/2)*sqrt(h)/(sqrt(G)*sqrt(k_B)*sqrt(M*T)))
2. Solved for lambda: Eq(lambda, h/(sqrt(k_B)*sqrt(M*T)))
3. Substituted Planck definitions...
4. Simplified Result:
>>> Eq(lambda, h/(sqrt(k_B)*sqrt(M*T)))
--- Deriving formula for: E ---
1. Postulate: E/E_P, M/m_P
Symbolic Form: Eq(E*sqrt(G)/(c**(5/2)*sqrt(h)), sqrt(G)*M/(sqrt(c)*sqrt(h)))
2. Solved for E: Eq(E, M*c**2)
3. Substituted Planck definitions...
4. Simplified Result:
>>> Eq(E, M*c**2)
--- Deriving formula for: E ---
1. Postulate: E/E_P, f*t_P
Symbolic Form: Eq(E*sqrt(G)/(c**(5/2)*sqrt(h)), sqrt(G)*f*sqrt(h)/c**(5/2))
2. Solved for E: Eq(E, f*h)
3. Substituted Planck definitions...
4. Simplified Result:
>>> Eq(E, f*h)
--- Deriving formula for: r_s ---
1. Postulate: r_s/l_P, M/m_P
Symbolic Form: Eq(c**(3/2)*r_s/(sqrt(G)*sqrt(h)), sqrt(G)*M/(sqrt(c)*sqrt(h)))
2. Solved for r_s: Eq(r_s, G*M/c**2)
3. Substituted Planck definitions...
4. Simplified Result:
>>> Eq(r_s, G*M/c**2)
--- Deriving formula for: P ---
1. Postulate: P/P_P, (T/T_P)**4
Symbolic Form: Eq(G**2*P*h/c**7, G**2*T**4*k_B**4/(c**10*h**2))
2. Solved for P: Eq(P, T**4*k_B**4/(c**3*h**3))
3. Substituted Planck definitions...
4. Simplified Result:
>>> Eq(P, T**4*k_B**4/(c**3*h**3))
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