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Summary

This PR improves documentation quality across the repository with focused fixes for grammar, typos, and clarity.

Changes Made

Main Repository

  • Expanded README.md with comprehensive repository description and structure overview

Operator Documentation (operators/)

  • Fixed KdV.md title (was incorrectly labeled "Heat Equation")
  • Corrected KdV equation mathematical errors:
    • Changed ∂³u/∂t³ → ∂³u/∂x³ (third derivative should be with respect to space, not time)
    • Changed ∂u/∂t → ∂u/∂x in nonlinear term
  • Updated deprecated Julia functions:
    • full()Matrix()
    • linspace()range()
  • Fixed grammar and formatting throughout:
    • "ie." → "i.e.," with proper punctuation
    • ":-" → ":" for consistency
    • Added hyphens to compound adjectives (time-dependent, time-independent)
    • "checkout" → "check out" (proper verb form)

Subdirectory READMEs

  • Enhanced newton/README.md with description of content
  • Enhanced dae_adjoint/README.md with description of content
  • Fixed grammar in titles

Testing

All changes are documentation-only and do not affect code functionality. The mathematical corrections in KdV.md make the equation match the standard Korteweg–de Vries equation formulation.

cc @ChrisRackauckas

🤖 Generated with Claude Code

- Expanded main README.md with repository description and structure
- Fixed KdV.md title (was incorrectly "Heat Equation")
- Corrected KdV equation: ∂³u/∂x³ not ∂³u/∂t³, and ∂u/∂x not ∂u/∂t
- Updated deprecated Julia functions: full() → Matrix(), linspace() → range()
- Fixed grammar throughout: "ie." → "i.e.,", ":-" → ":", hyphens in compounds
- Improved README files in newton/ and dae_adjoint/ subdirectories
- Minor clarity improvements in operator tutorial examples

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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