Caloric

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18 Questions

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13	Is $\mathbb{Q}^2$ homeomorphic to $\mathbb{Q}^2\setminus \{0\}$?
5	Calculating integral with branch cut.
5	Decomposition of polynomial into irreducible polynomials
4	Example of finite simply connected space
4	A description of all continuous functions on the quotient space.

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589 Reputation

+5	Example of finite simply connected space
+25	Calculating integral with branch cut.
+10	Homotopy equivalence of torus and $\mathbb{C^2}$ without coordinate cross.
+5	Existance of inverse operators for Hermitian adjoint operators

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5 Answers

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8	Please calculate $\lim_{x\rightarrow 0}\frac{\ln(\cos x)}{x^2}$
2	Proof correctness Eigenvalues and Isomorphisms
2	Why uniform closure $\mathscr{B}$ of an algebra $\mathscr{A}$ of bounded complex functions is uniformly closed?
1	Expanding $(I+A)^{-1}$
1	A problem determinant whose entries are from a equation involving kronecker delta

28 Tags

10 real-analysis × 7	2 proof-writing
8 homework	2 eigenvectors
4 linear-algebra × 5	0 general-topology × 8
2 axiom-of-choice	0 calculus × 5
2 eigenvalues	0 complex-analysis × 2

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