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New posts in soft-question
Color each positive integer with red and blue, whether there must be three numbers $a, b, c$ with same color such that $a^2+b^2 = c^2$? [duplicate]
soft-question
education
math-history
big-list
big-picture
What would be a good outdoor maths puzzle for children?
soft-question
big-list
recreational-mathematics
What's an example of an infinitesimal?
calculus
soft-question
math-history
nonstandard-analysis
infinitesimals
How do mathematicians think about the existence of numbers?
soft-question
math-history
philosophy
Definition of regularity in PDE theory
real-analysis
functional-analysis
partial-differential-equations
soft-question
Why are skew-symmetric matrices of interest?
matrices
algebraic-geometry
reference-request
soft-question
skew-symmetric-matrices
Variety vs. Manifold
algebraic-geometry
differential-geometry
soft-question
How can people understand complex numbers and similar mathematical concepts?
soft-question
complex-numbers
definition
intuition
Reference request (famous mathematicians for High School)
real-analysis
reference-request
soft-question
What would be a good way to memorize theorems about algebra?
soft-question
Can all maths be represented in geometry?
geometry
soft-question
Useless math that became useful
number-theory
soft-question
recreational-mathematics
education
applications
Does there exist another way of obtaining a topological space from a metric space equally deserving of the term "canonical"?
general-topology
soft-question
category-theory
metric-spaces
How is it shown that quintic equations can be solved by radicals and ultraradicals?
abstract-algebra
reference-request
soft-question
Cross product of cohomology classes: intuition
algebraic-topology
soft-question
What makes the pairs of operators $(-, +)$ and $(÷, ×)$ so similar?
soft-question
arithmetic
Research in plane geometry or euclidean geometry
geometry
soft-question
The Order of the Identity of a Group
group-theory
soft-question
What material is good for extra-studying
soft-question
What does a "convention" mean in mathematics?
soft-question
terminology
convention
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