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My Themed Sets

If you like challenging problems and informative notes on calculus, modern physics, and calculus of variation, visit my sets:

Zheng's Physics Collection

Zheng's Mathematical Manual

Puzzles from the Far East

Proof, Disproof, and Derivation

Classic Demonstrations

I will also add more material on partial differential equations here

Note by Steven Zheng
1 year, 10 months ago

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