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Nov
23
awarded  Good Answer
Nov
3
revised Difficulty level of Courant's book
grammar
Oct
28
awarded  Popular Question
Oct
22
awarded  Nice Answer
Oct
9
awarded  Yearling
Oct
4
comment Is a path homotopy equivalence class a path component?
Can you define more what $\Omega$ is?
Oct
4
comment What is the geometric interpretation of the leading coefficient in a quadratic equation?
No. The interpretation of $a$ geometrically is that it impacts the curvature. As far as I know, there is no name which specifically refers to $a$ and also reflects this geometric meaning. If there is one, it would be sufficiently obscure to be relatively useless.
Oct
4
comment What is the geometric interpretation of the leading coefficient in a quadratic equation?
The sign is the same as the sign of a, so it still determines convexity vs concavity. The number a is directly proportional to the second derivative, so the magnitude directly impacts the curvature as well, and this is the geometric meaning of it. If you're asking for a "name" for a alone, you can call it the leading coefficient (assuming you've written the equation down) or the coefficient of the highest term.
Oct
4
answered What (previously and currently unsolved) problems motivate the study/development of analysis?
Oct
4
answered What is the geometric interpretation of the leading coefficient in a quadratic equation?
Sep
6
comment Asymptotic behavior of $1/\ln n$ and $e^x-1$
What is the definition of big O that you are using? Normally, this is defined with the limit of a ratio, and this should be a useful way to proceed in both questions.
Dec
3
comment Find a value for a number to the power of a complex number
Some context would be helpful here in order to present an answer which would most likely agree with your background. Was this a question which came up in a class? If so, what subject?
Oct
16
answered Proving Multivairble Limit Exists
Oct
13
comment Black-Scholes equation
Agreed, I got the same result.
Oct
9
awarded  Yearling
Sep
30
awarded  Explainer
Jul
18
revised How to calculate the number of lattice points in the interior and on the boundary of these figures with vertices as lattice points?
edited body
Jul
4
comment How to calculate the number of lattice points in the interior and on the boundary of these figures with vertices as lattice points?
@SaaqibMahmuud Which part do you have questions about? Do you understand how to find out how many lattice points are on a line between two specified ones?
Jul
2
awarded  Curious
Jun
29
comment Proving Two sets have same cardinality
You haven't said what $f$ is, there's no reason to assume it is injective at all. Certainly not all functions from $B$ to $P(A)$ are injective, so without explicitly constructing the function you cannot complete this proof.