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May
14
answered Why is a Möbius transform uniquely determined based on known mappings of three points?
May
10
answered Is Lipschitz's condition necessary for existence of unique solution of an I.V.P.?
Jan
31
answered How to prove the following recursive sequence produce relatively prime numbers
Jan
12
answered Vector subspaces of $\mathbb{R}[x]_n$ result
Nov
15
answered Eigenvalues of operator $p(T)$ in terms of the eigenvalues of $T$, where $p$ is a polynomial
Nov
12
answered Is there a simpler proof that $f(x,y,z) = 4x + 11y + 18z$ is surjective?
Nov
3
answered Let $V$ be a finite dimensional real vector space and let $A:V\to V$ be a linear map such that $A^2=A$
Oct
21
answered Deduce the Bolzano-Weierstrass Theorem from the Heine-Borel Theorem
Oct
14
answered Graph of measurable function has measure 0 in the product measure space
Oct
2
answered Decomposing Countable Union of Measurable Sets
Oct
1
answered $AB$ is not invertible
Sep
27
answered Theorem 20 Hoffman Kunze Linear Algebra book Section 3.6
Sep
27
answered Task interpretation for Hoffman Kunze Linear Algebra exercise 1 (b) sec. 3.6
Sep
9
answered Prove that $\sin(x+a), \sin(x+b),\sin(x+c), \hspace{5pt} a,b,c \in \mathbb{R}$ are linearly dependent
Jul
31
answered Let $T:V\to W$ be a linear transformation. If $\dim V> \dim W$ then $T$ is not injective. True or false?
Jul
10
answered The annihilator of an intersection
Jun
4
answered Why doesn't mathematical induction work backwards or with increments other than 1?
May
23
answered If $AB = I$ then $BA = I$
Apr
4
answered How to understand Cauchy's proof of AM-GM inequality(the last step)
Mar
25
answered Riemann-integrable functions and pointwise convergence