Rigorous proof for if $\operatorname{Corr}(X,Y) =1$ then $X = a Y + b$ with $a>0$
72551
Proof that $\rho = \pm1$ implies linear combination
89535
fake proof of $\forall a. \forall b. a = b \to 1 = 0$
60761
Proof: $\cos^p (\theta) \le \cos(p\theta)$
5526
Prove that $ℤ[i]^*= \{1,-1,i,-i\}$
117257
Proving the supremum of the set {$\cos (1/x)$} is 1
37569
Prove that $\binom{n}{r} + \binom{n}{r+1} = \binom{n+1}{r+1} $
1932
How to show this equality of $\rho(X,Y)$
133884
A proof using Yoneda lemma
55461
How to prove that if $a$ belongs to $\mathbb R$, such that $0\leq a \leq\epsilon$, then $a = 0$
157733
Are positive real numbers $x,y$ allowed to be taken out during this proof?
125209
Prove $e^x - e^y \leq e |x-y|$ for $x$ belonging to $[0,1]$
64108
how to prove $a+b-ab \le 1$ if $a,b \in [0,1]$?
13136
Element chasing proof that $(A\setminus C)\setminus(B\setminus C) = (A\setminus B)\setminus C$
106799
Proof Verification: Converse of Intermediate Value Theorem
138199
Proof explanation $A\setminus B = A \setminus B \cap A$
19457
Show that: $\inf(A+B) = \inf(A)+ \inf(B)$
26741
How to prove for $s<1,|a+b|^s\le|a|^s+|b|^s$