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Triangle's inequality of a norm is equivalent to the convexity of the closed unit ball.
August 1st, 2022
functional-analysis
normed-spaces
Why eigenfunction cannot be identically zero in this question?
August 1st, 2022
ordinary-differential-equations
partial-differential-equations
Prove that $\sqrt{s(s-a)(s-b)(s-c)}=A$
August 1st, 2022
geometry
proof-writing
triangles
radicals
area
maclaurin series of $f(x)=xe^{-x}$
November 28th, 2020
power-series
taylor-expansion
Axiom of Choice iff Every set has a choice function
August 1st, 2022
set-theory
axiom-of-choice
Numerical integration with infinity as upper bound
October 23rd, 2020
integration
numerical-methods
conditions that the chord subtend a right angle
January 5th, 2020
circles
tangent-line
Integral of spherical harmonics over sphere
October 20th, 2021
integration
spherical-harmonics
Finding sum of convergent alternating series
November 7th, 2020
calculus
sequences-and-series
Formula to calculate the coordinates of some points on a circle
February 19th, 2020
circles
coordinate-systems
Proof of a result about Riemann Stieltjes integral and functions of bounded variation
November 28th, 2020
real-analysis
bounded-variation
Finding equation for line passing through point A and parallel to two planes
March 16th, 2020
linear-algebra
plane-geometry
Prove; Powerset Cardinality is $2^n$ - I have trouble understanding the prove.
August 1st, 2022
elementary-set-theory
induction
How to solve exponents using log?
January 4th, 2020
logarithms
exponential-function
How to show that the limit of cosh(z) as z goes to infinity does not exist?
July 30th, 2020
complex-analysis
limits
definition
infinity
what is the difference between a cycle and a circuit in graph theory?
November 15th, 2020
graph-theory
Finding the Fourier series of $\delta(x)$ on $ (-\pi, \pi)$ (dirac delta)
December 1st, 2020
definite-integrals
fourier-series
dirac-delta
Necessary condition to a curve lying on a sphere
November 13th, 2020
differential-geometry
curves
non homogeneous exponential distribution
March 19th, 2020
probability
exponential-distribution
What is the sum of the squares of the roots of the equation $x^2 − 7[x] + 5 = 0?$ (Here $[x]$ denotes the greatest integer less than or equal to $x$)
August 1st, 2022
quadratics
Why Null Set is zero Dimensional
August 1st, 2022
linear-algebra
vector-spaces
Partial differential equation switching to polar coordinates
August 1st, 2022
calculus
partial-differential-equations
What is the intuitive reason that partial differential equations are hard to solve?
October 21st, 2020
ordinary-differential-equations
partial-derivative
Is the Kernel a Maximal Ideal?
December 23rd, 2020
abstract-algebra
ring-theory
field-theory
What's the significance of conditional and absolute convergence?
September 5th, 2020
sequences-and-series
absolute-convergence
conditional-convergence
In a Measure Space show $ \mu(A) + \mu(B)= \mu(A \cup B)+\mu(A \cap B) $
December 18th, 2020
measure-theory
Estimating the standard deviation by simply looking at a histogram
October 6th, 2020
normal-distribution
estimation
standard-deviation
Is 3-CNF to 2-CNF generally possible (or in particular)?
January 25th, 2020
logic
propositional-calculus
conjunctive-normal-form
What is the difference between Euclid's division lemma and Euclid's division algorithm?
December 22nd, 2021
elementary-number-theory
gcd-and-lcm
Probability Involving Senior High School Graduating Class
September 21st, 2020
probability
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Recents
What age is too old for research advisor/professor?
How much solvent do you add for a 1:20 dilution, and why is it called 1 to 20?
How many weeks of holidays does a Ph.D. student in Germany have the right to take?
Why higher the binding energy per nucleon, more stable the nucleus is.?
What happen if the reviewer reject, but the editor give major revision?
Coordination number of 3D close packing
Why do universities check for plagiarism in student assignments with online content?
pKa = pH for strong acid — strong base?
Anonymous sites used to attack researchers. What to do about it?
Why does [Ni(gly)2] show optical isomerism despite having no chiral carbon?
I downoaded articles from libgen (didn't know was illegal) and it seems that advisor used them to publish his work
How do superwomen find time?
What is the chemical formula of ghee?
Masters in mathematics after bachelors in mechanical engineering
Advantages or disadvantages of submitting to the new APS open access PRResearch journal?
Why energy is released when an electron is added to a neutral atom?
Time constant of $RC$ circuit with more than one capacitor
Why is CH4 Nonpolar but CH2Cl2 is polar?
Which of the compounds has the highest percentage of enol?
Article waiting for AE assignment for too long?
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