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New posts in proof-explanation
How to prove that $\sqrt{2+\sqrt3}-\sqrt{2-\sqrt3}=\sqrt2$ without squaring both sides
algebra-precalculus
proof-verification
proof-writing
proof-explanation
radicals
Stuck on specific argument in the proof of O'Nan-Scott-Aschbacher theorem
group-theory
permutations
finite-groups
proof-explanation
Open Set in $\mathbf{R}^n$ can be Covered by Countable Union of Compact Sets
real-analysis
general-topology
proof-explanation
Irreducibles are prime in a UFD
abstract-algebra
ring-theory
proof-explanation
unique-factorization-domains
A function with a non-zero derivative, with an inverse function that has no derivative.
calculus
derivatives
proof-explanation
inverse-function
inverse-function-theorem
Reduction formula for $\int\frac{dx}{(ax^2+b)^n}$
calculus
integration
proof-explanation
indefinite-integrals
reduction-formula
General solution of a linear congruence $\,ax\equiv b\pmod m$
elementary-number-theory
proof-explanation
analytic-number-theory
Prove if a (mod n) has a multiplicative inverse, then it's unique
discrete-mathematics
modular-arithmetic
inverse
proof-explanation
gcd-and-lcm
Singular value decomposition proof
proof-verification
proof-writing
proof-explanation
least-squares
svd
Right adjoints preserve limits
category-theory
proof-explanation
limits-colimits
adjoint-functors
Why is complete strong induction a valid proof method and not need to explicitly proof the base cases?
proof-verification
logic
induction
proof-explanation
Prove that in any GCD domain every irreducible element is prime
abstract-algebra
proof-explanation
integral-domain
Proofs of Determinants of Block matrices [duplicate]
linear-algebra
matrices
determinant
proof-explanation
Neighborhood base generated by uniformity
general-topology
proof-explanation
definition
filters
uniform-spaces
$n_1,...,n_k$ pair coprime $\!\iff\! {\rm lcm}(n_1,...,n_k)=n_1...n_k$ [lcm = product for coprimes] [closed]
elementary-number-theory
proof-explanation
gcd-and-lcm
Understanding the Existence and Uniqueness of the GCD
elementary-number-theory
discrete-mathematics
proof-explanation
gcd-and-lcm
How many homomorphisms are there of $\mathbb{Z}/{3\mathbb{Z}} $ into $S_3$?
group-theory
finite-groups
proof-explanation
symmetric-groups
group-homomorphism
Baby Rudin 5.26
derivatives
proof-explanation
Reasoning that $ \sin2x=2 \sin x \cos x$
algebra-precalculus
trigonometry
proof-explanation
Abbott's Proof $(1/b_n) \to 1/b$
real-analysis
limits
proof-explanation
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