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Are all numbers rational?
June 8th, 2022
elementary-number-theory
rational-numbers
irrational-numbers
definition
Is a linear combination linearly independent?
June 10th, 2022
linear-algebra
definition
Differentiability of a matrix function
June 1st, 2022
matrices
definition
analysis
Epsilon delta definition: $\lim _{x\to-2} (2x^2+5x+3)=1$
June 20th, 2020
limits
definition
continuity
Pairwise non-integral numbers
June 2nd, 2022
definition
Solution of a differential equation having a singularity (not everywhere defined)
June 1st, 2022
ordinary-differential-equations
calculus
definition
Partial order relation
June 1st, 2022
definition
relations
order-theory
logic
notation
Limit of Identity Function vs. limit of Squaring Function
June 10th, 2022
definition
probability-limit-theorems
calculus
limits
Graph Theory: What is the definition of the "Sorted Edge" algorithm?
June 9th, 2022
definition
graph-theory
Perpendicular to Z axis or Skew to Z axis? (Definition of Perpendicular)
June 15th, 2022
definition
geometry
A conditioned on B is independent of C
June 8th, 2022
probability-theory
probability
definition
Barycenter of a measure
June 8th, 2022
barycentric-coordinates
measure-theory
definition
lipschitz-functions
Defining Compound Function
June 8th, 2022
definition
functions
What does it mean for simple functions to have finite range
June 12th, 2022
real-analysis
definition
terminology
Definition of locally integrable function
June 8th, 2022
calculus
improper-integrals
definition
Integer value of x?
June 8th, 2022
integration
integers
definition
What is a simple path in a directed graph?
June 1st, 2022
definition
graph-theory
Definition: Eigenspace of a matrix
June 1st, 2022
definition
eigenvalues-eigenvectors
matrices
Dot products in commutators
June 8th, 2022
operator-algebras
definition
Well-posed problem
June 1st, 2022
partial-differential-equations
definition
physics
How to find Df in functions
June 1st, 2022
definition
Why is that for any trigonometric function $f, f(2\pi + \theta )=f(\theta )$ for any value of $\theta$ [proof reading]
June 16th, 2022
algebra-precalculus
trigonometry
definition
Please help with understanding a logic definition: Subformula
June 9th, 2022
definition
logic
What are polynomials of degree less than $N$ in $x$?
June 16th, 2022
definition
linear-algebra
Standard or non-standard notation for swapping symbols
June 15th, 2022
formal-languages
notation
definition
Is tangent a line, line-segment or ray?
June 1st, 2022
tangent-line
geometry
definition
is an isometry injective or bijective?
June 9th, 2022
metric-spaces
definition
isometry
real numbers and number line
June 15th, 2022
number-systems
definition
What is "the orbit of a permutation"? Is the term "orbit" consistent with that for group action?
June 16th, 2022
abstract-algebra
definition
permutations
Definition of $C^1, $the vector space of continuously differentiable functions
June 1st, 2022
linear-algebra
functions
functional-analysis
real-analysis
definition
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