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Mathematical analysis

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mathematical analysis
branch of mathematics
derivative
In mathematics, the derivative is a fundamental tool that quantifies the sensitivity to change of a function's output with respect to its input. The derivative of a function of a single variable at a chosen input value, when it exists, is the slope of the tangent line to the graph of the function at that point. The tangent line is the best linear approximation of the function near that input value. The derivative is often described as the instantaneous rate of change, the ratio of the instantaneous change in the dependent variable to that of the independent variable. The process of finding a d
Euler's formula
mathematical formula in complex analysis that establishes the fundamental relationship between the trigonometric functions and the complex exponential function
metric space
set equipped with a metric (distance function)
asymptote
right|thumb|250px|The graph of a function with a horizontal (y = 0), vertical (x = 0), and oblique asymptote (purple line, given by y = 2x) right|thumb|250px|A curve intersecting an asymptote infinitely many times
maxima and minima
largest and smallest value taken by a function in a given range
Cauchy–Schwarz inequality
a useful inequality encountered in many different settings, such as linear algebra, analysis, probability theory, vector algebra and other areas. It is considered to be one of the most important inequalities in all of mathematics
continued fraction
expression of a rational as an iterative sequence of addition and inversion of integers
division by zero
the result yielded by a real number when divided by zero
neighborhood
set in a topological space that contains an open superset of a given point or subset
damping
thumb|upright|Underdamped spring–mass system with
uniform continuity
property limiting the "growth" of distances of outputs of a function uniformly across its domain
weighted mean
type of average
bounded set
set is called bounded, if it is, in a certain sense, of finite size
hyperreal number
element of a nonstandard model of the reals, which can be infinite or infinitesimal
mathematical singularity
in general a point at which a given mathematical object is not defined, or a point of an exceptional set where it fails to be well-behaved in some particular way, such as differentiability
finite difference
discrete analog of a derivative
second derivative
mathematical operation
real-valued function
function whose range is a subset of the real numbers
infinite product
expression representing the product of an infinite sequence
weight function
construct related to weighted sums and averages
discontinuity
point at which a function is not continuous
total derivative
derivative of a function of several variables with respect to one variable, without the others held constant
Cauchy principal value
value that can be assigned to certain divergent integrals over a finite interval
convex combination
linear combination of points whose coefficients are non-negative and sum to one
semi-continuity
thumb|right|An upper semicontinuous function that is not lower semicontinuous at x_0. The solid blue dot indicates f\left(x_0\right). thumb|right|A lower semicontinuous function that is not upper semicontinuous at x_0. The solid blue dot indicates f\left(x_0\right).
regularization
technique in mathematics, statistics, and computer science to make a model more generalizable and transferable
zero to the power of zero
mathematical expression with no necessarily obvious value
partition of an interval
increasing sequence of numbers that span an interval
Bôcher Memorial Prize
American award for mathematical analysis
equicontinuity
In mathematical analysis, a family of functions is equicontinuous if all the functions are continuous and they have equal variation over a given neighbourhood, in a precise sense described herein. In particular, the concept applies to countable families, and thus sequences of functions.
automorphic number
a natural number whose square "ends" in the same digits as the number itself
asymptotic expansion
series which gives an approximation to a function as the argument tends to some point
function series
series in which the summands are not just real or complex numbers but functions
multiplicity
number of times an element appears in the multiset
epigraph
the set of points lying on or above the graph of a function
monodromy
thumb|The imaginary part of the complex logarithm. Trying to define the complex logarithm on \C-\{0\} gives different answers along different paths. This leads to an infinite cyclic monodromy group and a covering of \C-\{0\} by a [[helicoid (an example of a Riemann surface).]]
series expansion
concept in mathematics
Dirichlet kernel
Concept in mathematical analysis
square-integrable function
function whose squared absolute value has finite integral
Introductio in analysin infinitorum
two-volume publication by Leonhard Euler
subadditivity
In mathematics, subadditivity is a property of a function that states, roughly, that evaluating the function for the sum of two elements of the domain always returns something less than or equal to the sum of the function's values at each element. There are numerous examples of subadditive functions in various areas of mathematics, particularly norms and square roots. Additive maps are special cases of subadditive functions.
Engel expansion
decomposition of a positive real number into a series of unit fractions, each an integer multiple of the next one
domain
connected open subset of a finite-dimensional vector space
total variation
measure of the local oscillation behavior of a function
function of a real variable
function whose domain a subset of real numbers
zeta function regularization
summability method in physics
polylogarithmic function
polynomial in the logarithm of n
unconditional convergence
Order-independent convergence of a sequence
extreme point
mathematical concept
weighted geometric mean
statistic
negligible function
mathematical function
stationary phase approximation
basic principle of asymptotic analysis due to George Gabriel Stokes and Lord Kelvin
moment problem
trying to map moments to a measure that generates them
uniform boundedness
Property of functions
Barlow's formula
conical combination
linear combination where the coefficients are non-negative
Lebesgue point
type of point where a function does not oscillate too much, roughly
hypograph
Mathematical analysis term
Macaulay brackets
notation used to describe discontinuous functions