I would appreciate any suggestions for "cheat sheets" (summary sheets) on the calculus of variations/ variational calculus in particular on the Euler -Lagrange equation, Lagrange multipliers, Legendre transform etc. Any suggestions? Thanks.
I know I could make one myself by laboriously pawing through a textbook, but I am just looking for a nice concise summary.
Best Answer
One possible resource is Schaum's Outlines. While there are no Schaum's Outlines for Calculus of Variations (as far as I know), there are chapters on calculus of variations in
which may suffice for your purpose.