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Legacy entrance

This page is preserved as an earlier Python Subway doorway. Current navigation now begins at Python and Numerical Validation, with the full route system at the Subway Python Transit Map and durable outputs at Machine Certificates.

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🚇 Python Subway entrance — executable checks for representation, spectrum, kernel rank, projector identities, convergence, graph lifts, and quantum channels.

District purpose: make every executable route visible, reproducible, and traceable.

🚇 Python Subway

🚇 N LINE — NUMERICAL VALIDATION

N01  Representation
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N02  Casimir
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N03  Spectrum
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N04  Kernel
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N05  Projector
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N06  Contraction
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N07  Heat Semigroup
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N08  Kraus Channel
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N09  FCC Graph
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N10  Rosetta Torus

Central station

Python and Numerical Validation

Machine facts

• $\dim V=125$
• $\dim E_{47}=47$
• $\dim E_{47}^{\perp}=78$
• $\gamma(K^\dagger K)=11664$
• $\|K^\dagger K\|=186624$
• stable range: $0<\varepsilon<1.071673525377229\times10^{-5}$

Certificate rule

Deterministic residuals are reported as machine-precision verification, never as sigma significance.

Visual assets

• Python Validation Companion