MJ Physics Engineering | Bangel Language | MJos Operating System

Owned and operated by Michael Bangel | Clearwater, Florida

MJPE-COMPLETE-20260925-EVE-PURPLE · Purple · Review draft

EVE Variance and Egress - Syntax and typed expression

Source-backed documentary sequence — execution not rerun

EVE Variance and Egress / Purple

MJ Physics Engineering | Bangel Language | MJos Operating System
Owned and operated by Michael Bangel | Clearwater, Florida

TYPED BANGEL BINDING

- Boundary: declared control surface
- FlowObservation: intake, capture and egress
- Residual: measured or UNKNOWN with unit
- VarianceLedger: source-bound differences

PRECONDITION

A profile declares its boundary and which intake, capture, leakage or egress quantities are actually observable.

SEMANTIC OBLIGATION

Account for variance and residuals with units and uncertainty; preserve unmeasured loss as unknown instead of silently closing the balance.

POSTCONDITION

Return an observation/egress ledger or HOLD incomplete evidence. A residual does not prove its physical cause.

COMPILATION RULE

Elsa is the compiler. Use a declared Bangel grammar profile, independently admit the applicable JP representation and execute through Joanna only where that path is implemented. These fields are documentary contract notation, not parser-verified source. A shared .bangel extension does not prove grammar equivalence.

PROFILE RELATIONSHIP

Named family identity; separate from color-paper identity.

IMPLEMENTATION CHECK

An omitted egress measurement must remain missing rather than disappearing from the balance.

DISCOVERY NAMES

EVE; EVE-SCREEN
These names aid search; current compiler naming remains Elsa.

SOURCE STATUS AND LIMITS

Historical reference or specification recovered. Its source status remains visible and is not promoted to a current standalone implementation.
Recovered status: documented_reference.
Documented domain role does not establish a currently deployed standalone engine.

SOURCE REFERENCES

- Recovered nonwhite collection, page 1309
https://drive.google.com/file/d/1RpxuVZjdCHSITNXIZZuWacJ1BNBAPCLv/view#page=1309

SOURCE LINKS

NO COMMERCIAL OR PUBLIC USE PERMITTED