New items – 2 total

• Fredholm index

  https://www.johndcook.com/blog/2025/04/20/fredholm-index/

  The Endeavour 04/20/2025

  differential

• Fredholm Alternative

  https://www.johndcook.com/blog/2025/04/20/fredholm-alternative/

  The Endeavour 04/20/2025

  algebra