Well, if anyone starts learning electricity and magnetism(or in particular Vol.2 of Feynman lectures, as that is my site of learning), one always gets these 2 important theorems for sure -

\[\displaystyle \text{1. Gauss' Theorem -} \int_{S}{C.n dS} = \int_{V}{\nabla.C dV}\] such that C is any vector, S area, V volume and \(\nabla.C\) is the divergence of C.

\[\displaystyle \text{2. Stokes' Theorem -} \int_{line}{C ds} = \int_{S}{{(\nabla \times C)}_{n} dS}\] such that C is any vector, \(\int_{line}{}\) means line integral, \(\nabla \times C\) is curl of C.

Now, I want proofs of both these strong theorems. Please if anyone can help me in any way, care to do so. Thanks in anticipation!

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## Comments

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TopNewestThe given theorems are particular cases of a very strong theorem in differential geometry/Calculus on Manifolds, called generalized Stokes' theorem; although applied to electricity concepts. You can see any vector calculus book for particular cases proof and Michael Spicak's Calculus on Manifolds or Rudin's Principles of Mathematical Analysis for the proof of general case. As for proof corresponding to Physical case, you could refer Piyush A Kundu's Electricity textbook.

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Do you still need help with it or have you found out a way to solve it yourself ?

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Still need! That's why I have shared the set! Check out others also! Well, I have one proof with some assumptions but I want a 'proper mathematical proof'!

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Good problems should be challenging but not tedious. Unrelated to this thread but just a reminder/word of advice.

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