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Show that any quadric in $\mathbb{P}^3$ is isomorphic to $\mathbb{P}^1 \times \mathbb{P}^1$
August 1st, 2022
algebraic-geometry
projective-geometry
projective-space
quadrics
Language and spell check
January 12th, 2020
texstudio
spelling
grammar
What is the origin of the phrase "as desired" in mathematics?
August 1st, 2022
math-history
How many decimal places for a logarithm to "round off"
August 1st, 2022
logarithms
Renumber bibliography in references
August 1st, 2022
biblatex
numbering
A Category Theoretical view of the Kalman Filter
August 1st, 2022
reference-request
category-theory
dynamical-systems
game-theory
Show that the rationals are an incomplete metric space without reference to reals
February 10th, 2021
metric-spaces
multiple alignment inside cases environment
June 14th, 2020
horizontal-alignment
equations
cases
How many electrons are in the d orbitals of NiCl2·6H2O?
August 1st, 2022
inorganic-chemistry
orbitals
transition-metals
Does a nonlinear additive function on R imply a Hamel basis of R?
August 1st, 2022
analysis
logic
set-theory
axiom-of-choice
Distributive Property of Quantifiers
April 19th, 2020
logic
predicate-logic
first-order-logic
quantifiers
Show $(\mathbb{C}^*,\cdot,1) \cong (\mathbf{T},\cdot,1)\times (\mathbb{R}_{>0},\cdot,1)$ where $\mathbf{T} = \{a+bi \in \mathbb{C}|a^2+b^2=1\}$.
August 1st, 2022
group-theory
Integrate $4x/(x^4-1)$ dx
December 18th, 2020
calculus
integration
How to make a rightrightarrows
November 20th, 2020
arrows
Are there any valid continuous Sudoku grids?
October 29th, 2020
real-analysis
sudoku
How to automatically cite your own publications in a resume?
August 1st, 2020
biblatex
cv
biblatex-publist
Determining the angle degree of an arc in ellipse?
August 1st, 2022
geometry
differential-geometry
circles
conic-sections
Are polynomial rings finitely generated modules over the base ring?
August 1st, 2022
abstract-algebra
commutative-algebra
modules
Subgroup of $GL_n$ isomorphic to $S_n$
August 1st, 2022
abstract-algebra
group-theory
Power indices on the left side
August 1st, 2022
math-mode
spacing
positioning
The length of rational and irrational number's sets.
August 16th, 2022
measure-theory
How to align tabular to the top of the side-by-side minipage?
August 1st, 2022
vertical-alignment
order $a$ = 5, $a^3b = ba^3$. show that that $ab = ba$.
August 6th, 2022
abstract-algebra
group-theory
Is it possible to get all possible sums with the same probability if I throw two unfair dice together?
August 1st, 2022
probability
dice
Lagrange multipliers and KKT conditions - what do we gain?
August 3rd, 2022
optimization
machine-learning
lagrange-multiplier
TikZ: Plot contour lines
July 28th, 2020
tikz-pgf
plot
$H$ prime order, normal subgroup of group $G$. Prove $H$ in center $Z(G)$.
January 10th, 2020
abstract-algebra
group-theory
normal-subgroups
Surprising Generalizations
August 9th, 2022
soft-question
big-list
intuition
A convergent sequence $\{a_n\}$ and divergent sequence $\{b_n\}$ such that $\{a_n+b_n\}$ is convergent
March 26th, 2020
real-analysis
sequences-and-series
analysis
PSTricks with standalone class and newpage or pagebreak
August 1st, 2022
pstricks
standalone
pdftricks
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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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