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New posts in proof-verification
Finite Sets, Equal Cardinality, Injective $\iff$ Surjective.
functions
proof-verification
elementary-set-theory
proof-writing
Proving isomorphism between linear maps and matrices
linear-algebra
proof-verification
linear-transformations
Use $C^\infty$ function to approximate $W^{1,\infty}$ function in finite domain
real-analysis
functional-analysis
proof-verification
sobolev-spaces
A bogus proof of countable power set [duplicate]
elementary-set-theory
proof-verification
cardinals
To prove that a mathematical statement is false is it enough to find a counterexample?
linear-algebra
proof-verification
induction
Is this theorem already in existence?
proof-verification
complex-numbers
Show that a connected graph on $n$ vertices is a tree if and only if it has $n-1$ edges.
combinatorics
graph-theory
proof-verification
Higher Order Derivative Proof .
analysis
derivatives
proof-verification
taylor-expansion
Prove that $f_n(x)=\frac{x}{n}$, $n=1,2,\ldots$ does not converge uniformly on $\mathbb{R}$
calculus
real-analysis
proof-verification
continuity
New Proof of Pythagorean Theorem (using inscribed circle)?
geometry
proof-verification
proof-writing
circles
Proving convergent sequences are Cauchy sequences
real-analysis
limits
proof-verification
cauchy-sequences
proof verification: $f(x) = 1/x$ is not uniformly continuous on the open interval (0,1).
real-analysis
proof-verification
continuity
prove that every continuous function is integrable
real-analysis
proof-verification
Find the limit $x\to1$ of : $\vert x^2+x-2\vert /(x^2-1)$
calculus
limits
proof-verification
What is wrong with this effort to generalize Bertrand's Postulate using the Inclusion-Exclusion Principle
elementary-number-theory
proof-verification
prime-numbers
prime-factorization
Prove that the equation $x^2=y$ has a unique solution
real-analysis
proof-verification
Prove that $x^x+y^y=z^z$ doesn't have integer solutions
number-theory
proof-verification
contest-math
exponentiation
integers
The set of all finite subsets of the natural numbers is countable [duplicate]
elementary-set-theory
proof-writing
proof-verification
In a field, prove that if $ x + x = 0$ then $ 1 +1 = 0$
proof-verification
field-theory
Proving associativity of matrix multiplication
linear-algebra
proof-verification
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