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Formula Corrections

Formula corrections record changes to equations, assumptions, normalization choices, signs, factors, and formula-card metadata. They are high-priority because readers use formulas for calculations.

No public formula correction entries have been recorded yet for the current draft build.

Record a formula correction when a change affects:

  • a sign,
  • a factor of 22, π\pi, 2π2\pi, ℏ\hbar, cc, or volume,
  • a matrix entry,
  • a normalization convention,
  • a boundary condition,
  • a domain or assumption,
  • a dimensional factor,
  • a displayed formula in a formula-card page,
  • an equation used by a worked example or benchmark.

Minor prose around a formula belongs in site errata only if the formula itself was correct.

Use this format:

Field Meaning
ID stable correction identifier
page affected page
formula label or section where the formula appears
issue type sign, factor, unit, convention, domain, notation, or typo
old form short description, not a long quote
corrected form corrected statement or formula
source checked canonical page, textbook, paper, or derivation
status confirmed, fixed, superseded, or wontfix
date fixed date

Before marking a formula correction fixed, check:

  • dimensions,
  • limiting cases,
  • sign conventions,
  • normalization conventions,
  • consistency with the canonical derivation,
  • internal links to formula and derivation pages,
  • KaTeX rendering,
  • references.
  • A missing ℏ\hbar after moving between natural and SI units.
  • A Fourier transform sign copied from a different convention.
  • A scattering amplitude formula quoted with a mismatched normalization.
  • A density-matrix trace formula with transposed subsystem ordering.
  • A Pauli or spin matrix with an incorrect sign.