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### Questions (32)

 15 Steinhaus theorem (sums version) 10 Weierstrass approximation does not hold on the entire Real Line 9 Derivative of a function is odd prove the function is even. 8 function that is its own inverse 6 Ring of polynomials over a field has infinitely many primes

### Reputation (738)

 +10 Steinhaus theorem (sums version) +5 Weierstrass approximation to a differentiable function +5 Ring of polynomials over a field has infinitely many primes +5 Derivative of a function is odd prove the function is even.

 2 (Theoretical) Multivariable Calculus Textbooks 2 What is a very simple example of a matrix acting on a vector space? 1 Not intersection of two sets 1 Counting the number of isomorphism types of abelian groups of order 2000 0 Recommend books for this syllabus

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 2 linear-algebra × 5 2 multivariable-calculus 2 reference-request × 2 1 abstract-algebra × 12 2 vector-spaces 1 elementary-set-theory × 2 2 big-list 0 real-analysis × 15 2 self-learning 0 analysis × 5

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