Mathematics

83%

+8 −0

Classification of topological points

1 answer · posted almost 2 years ago by celtschk‭ · last activity over 1 year ago by Ezekiel‭

topology

71%

+3 −0

Isn't it wrong to write that Indefinite Integral = Definite Integral with a variable in its Upper Limit?

2 answers · posted over 1 year ago by VLDR‭ · edited over 1 year ago by The Amplitwist‭

calculus

77%

+5 −0

Does this generalization of path-connectedness also cover general connectedness?

0 answers · posted over 1 year ago by celtschk‭ · edited over 1 year ago by celtschk‭

topology connectedness

83%

+8 −0

Are there useful topologies on Cartesian products “in between” the product topology and the box topology?

0 answers · posted over 1 year ago by celtschk‭ · edited over 1 year ago by celtschk‭

topology

71%

+3 −0

Cutting the square

0 answers · posted almost 2 years ago by Grove‭ · edited over 1 year ago by Grove‭

geometry

71%

+3 −0

Why does this definition of generalized forces work?

1 answer · posted over 1 year ago by Ezekiel‭ · last activity over 1 year ago by Derek Elkins‭

differential-geometry lagrangian-mechanics classical-mechanics physics

80%

+6 −0

What surface do I get by attaching $g$ handles as well as $k$ crosscaps to a sphere?

1 answer · posted over 1 year ago by The Amplitwist‭ · last activity over 1 year ago by msh210‭

geometry topology compactness connectedness sphere

75%

+4 −0

In $P(X\leq q)$, what do we call $q$?

1 answer · posted almost 2 years ago by anoldmaninthesea‭ · last activity over 1 year ago by gramps‭

probability

81%

+7 −0

Are 3 10% chances better than one 30% chance (when penalized by a variable for failures)?

3 answers · posted over 1 year ago by dustytrash‭ · last activity over 1 year ago by Grove‭

logic basic odds

75%

+4 −0

Normal in one base and not in another?

0 answers · posted over 1 year ago by Grove‭

number-theory normal bases

75%

+4 −0

Given a triangle with squares on two sides, the line segments joining the centres of the squares to the midpoint of the third side are equal and perpendicular

1 answer · posted over 1 year ago by The Amplitwist‭ · edited over 1 year ago by ArtOfCode‭

geometry complex-analysis

75%

+4 −0

Product of empty set of elements vs. product over empty indexing set — is there any difference?

1 answer · posted almost 2 years ago by The Amplitwist‭ · edited over 1 year ago by The Amplitwist‭

product definition notation algebra-precalculus

80%

+6 −0

Why always rationalize a denominator?

3 answers · posted almost 2 years ago by msh210‭ · last activity almost 2 years ago by Derek Elkins‭

high-school-mathematics

44%

+2 −3

Intuitively, what does the 1 mean in $\dfrac{a}{b} = \dfrac{1}{\frac{b}{a}}$?

2 answers · posted almost 2 years ago by Chgg Clou‭ · last activity almost 2 years ago by nalply‭

intuition

66%

+2 −0

Disentangling Machine Learning Theory with Cross-Validation

0 answers · posted almost 2 years ago by seth.wagenman‭

model

87%

+12 −0

Why does the decimal expansion of $1/(10n - 1)$ have this neat pattern?

3 answers · posted almost 2 years ago by The Amplitwist‭ · last activity almost 2 years ago by celtschk‭

number-theory high-school-mathematics

75%

+4 −0

Proving the Equation of the Pencil of Two Intersecting Circles

1 answer · posted almost 2 years ago by TripleFault‭ · last activity almost 2 years ago by msh210‭

high-school-mathematics pencil conics proof circle

80%

+6 −0

The probability distribution of rolling $n$ dice and keeping $k$ highest

1 answer · posted 2y ago by tommi‭ · last activity almost 2 years ago by Peter Cooper Jr.‭

probability dice

57%

+2 −1

Equation of a line given some parametrized points on it and an area

1 answer · posted almost 2 years ago by msh210‭ · last activity almost 2 years ago by msh210‭

high-school-mathematics coordinate-geometry

71%

+3 −0

Method to calculate the area of a cyclic n-gon

0 answers · posted almost 2 years ago by Razetime‭ · edited almost 2 years ago by Razetime‭

geometry polygon area

75%

+4 −0

Using maximum of forecasted values to forecast maximum

1 answer · posted almost 2 years ago by Guilherme Costa‭ · last activity almost 2 years ago by Stephan Kolassa‭

forecast

77%

+5 −0

Which of the multiple definitions of correlation to use?

0 answers · posted almost 2 years ago by Mithrandir24601‭ · last activity almost 2 years ago by r~~‭

statistics correlation

80%

+6 −0

Discrete data: Graphs and skewness

2 answers · posted almost 2 years ago by Nezar ‭ · last activity almost 2 years ago by 1muflon1‭

skewness statistics discrete-data

40%

+0 −1

Existence of a set of all sets

2 answers · posted almost 2 years ago by MathPhysics‭ · last activity almost 2 years ago by Derek Elkins‭

set-theory

77%

+5 −0

Can we adapt Furstenberg's proof of the infinitude of primes to other interesting subsets of the integers?

0 answers · posted almost 2 years ago by HDE 226868‭ · edited almost 2 years ago by msh210‭

number-theory topology

77%

+5 −0

Similar triangles with the same area

2 answers · posted almost 2 years ago by msh210‭ · last activity almost 2 years ago by DonielF‭

euclidean-geometry high-school-mathematics

71%

+3 −0

Including Association Analysis results into existing Classification Model

0 answers · posted almost 2 years ago by Guilherme Costa‭

classification association-rules

71%

+3 −0

Asymptotics of counting integers by prime signature

1 answer · posted almost 2 years ago by Peter Taylor‭ · last activity almost 2 years ago by Derek Elkins‭

number-theory

75%

+4 −0

Can we constructively find a third element of a set $X$ satisfying $X \cong X \times X$ given two distinct elements?

0 answers · posted almost 2 years ago by Derek Elkins‭

constructive-logic type-theory

80%

+6 −0

Computational hardness of the uniform halting problem

1 answer · posted 2y ago by user53100‭ · last activity 2y ago by Derek Elkins‭

computability oracle-turing-machine arithmetical-hierarchy

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