Newbetuts
.
New posts in proof-writing
Proof by induction that $ \sum_{i=1}^n 3i-2 = \frac{n(3n-1)}{2} $ [closed]
summation
proof-writing
induction
arithmetic-progressions
Vector spaces - Multiplying by zero scalar yields zero vector
linear-algebra
vector-spaces
proof-writing
proof-verification
learning
Difference between $\implies$ and $\;\therefore\;\;$?
logic
notation
proof-writing
Proof of Wolstenholme's theorem
number-theory
elementary-number-theory
prime-numbers
proof-writing
divisibility
English words in written mathematics
reference-request
soft-question
proof-writing
education
Explain proof that any positive definite matrix is invertible
linear-algebra
proof-writing
eigenvalues-eigenvectors
Why don't Venn diagrams count as formal proofs?
elementary-set-theory
proof-writing
Orthogonality of Row A and Nul A and vectors in $\mathbb{R}^n$
linear-algebra
proof-writing
Proof for triangle inequality for vectors
inequality
vector-spaces
proof-writing
inner-products
Proving the Apollonian circle formula
complex-numbers
proof-writing
contest-math
analytic-geometry
Proving by strong induction that $\forall n \ge 2, \;\forall d \ge 2 : d \mid n(n+1)(n+2)...(n+d-1) $
elementary-number-theory
proof-writing
induction
divisibility
Prove that $(a-b) \mid (a^n-b^n)$ [duplicate]
elementary-number-theory
proof-writing
induction
divisibility
Show that lcm$(a,b)= ab$ if and only if gcd$(a,b)=1$
abstract-algebra
elementary-number-theory
proof-writing
Prove that $\mathcal{P}(A)⊆ \mathcal{P}(B)$ if and only if $A⊆B$. [duplicate]
discrete-mathematics
proof-writing
What is the proof that covariance matrices are always semi-definite?
probability
matrices
vector-spaces
proof-writing
positive-semidefinite
Should a mathematical proof be 'convincing'?
proof-writing
philosophy
formal-proofs
How can I answer this Putnam question more rigorously?
calculus
proof-writing
contest-math
How to efficiently use a calculator in a linear algebra exam, if allowed
linear-algebra
matrices
vector-spaces
proof-writing
The art of proof summarizing. Are there known rules, or is it a purely common sense matter?
logic
proof-writing
soft-question
Existence and uniqueness of function satisfying intuitive properties of distance in $\mathbb{R}^2$?
geometry
proof-writing
Prev
Next