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Integral element - Wikipedia

https://en.wikipedia.org/wiki/Integral_extension
over a subring A of B if b is a root of some monic polynomial over A

Local ring - Wikipedia

https://en.wikipedia.org/wiki/Local_ring
In the case of commutative rings, one does not have to distinguish between left, right and two-sided ideals: a commutative ring is local if and only if it has a unique maximal ideal

Embedding - Wikipedia

https://en.wikipedia.org/wiki/Embedding
This allows two spaces to be distinguished if one is able to be embedded in a space while the other is not

Division ring - Wikipedia

https://en.wikipedia.org/wiki/Skew-field
If one allows only rational instead of real coefficients in the constructions of the quaternions, one obtains another division ring

Measurable function - Wikipedia

https://en.wikipedia.org/wiki/Measurable_function
If f : X → Y {\displaystyle f:X\to Y} is a measurable function, one writes f : ( X , Σ ) → ( Y , T )

List of topology topics - Wikipedia

https://en.wikipedia.org/wiki/List_of_topology_topics
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List of commutative algebra topics - Wikipedia

https://en.wikipedia.org/wiki/List_of_commutative_algebra_topics
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List of representation theory topics - Wikipedia

https://en.wikipedia.org/wiki/List_of_representation_theory_topics
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Isomorphism - Wikipedia

https://en.wikipedia.org/wiki/Canonical_isomorphism
An isomorphism between two structures is a canonical isomorphism (a canonical map that is an isomorphism) if there is only one isomorphism between the two structures (as is the case for solutions of a universal property), or if the isomorphism is much more natural (in some sense) than other isomorphisms

Ideal (order theory) - Wikipedia

https://en.wikipedia.org/wiki/Ideal_(order_theory)
Now if any element n in M is such that n ∨ b is in F, one finds that (m ∨ n) ∨ b and (m ∨ n) ∨ a are both in F

List of differential geometry topics - Wikipedia

https://en.wikipedia.org/wiki/List_of_differential_geometry_topics
Jump to content Main menu Main menu move to sidebar hide Navigation Main page Contents Current events Random article About Wikipedia Contact us Contribute Help Learn to edit Community portal Recent changes Upload file Special pages

Toll (fee) - Wikipedia

https://en.wikipedia.org/wiki/Toll_(fee)
In Europe, the road toll goes back to the practice of the Germanic tribes, who charged fees to travellers if they wanted to cross over mountain passages

Injective module - Wikipedia

https://en.wikipedia.org/wiki/Injective_module
Specifically, if Q is a submodule of some other module, then it is already a direct summand of that module; also, given a submodule of a module Y, any module homomorphism from this submodule to Q can be extended to a homomorphism from all of Y to Q

Discrete space - Wikipedia

https://en.wikipedia.org/wiki/Discrete_space
}"/> A metric space ( E , d ) {\displaystyle (E,d)} is said to be uniformly discrete if there exists a packing radius 0"}}'>0}"> r > 0 {\displaystyle r>0} 0}"/> such that, for any x , y ∈ E , {\displaystyle x,y\in E,} one has either x = y {\displaystyle x=y} or r

Non-associative algebra - Wikipedia

https://en.wikipedia.org/wiki/Non-associative_ring
That is, an algebraic structure A is a non-associative algebra over a field K if it is a vector space over K and is equipped with a K-bilinear binary multiplication operation A × A → A which may or may not be associative

Monotonic function - Wikipedia

https://en.wikipedia.org/wiki/Monotonic
A function is termed monotonically increasing (also increasing or non-decreasing)[3] if for all x {\displaystyle x} and y {\displaystyle y} such that x ≤ y {\displaystyle x\leq y} one has f ( x ) ≤ f ( y ) {\displaystyle f\

Monotonic function - Wikipedia

https://en.wikipedia.org/wiki/Monotonic_function
A function is termed monotonically increasing (also increasing or non-decreasing)[3] if for all x {\displaystyle x} and y {\displaystyle y} such that x ≤ y {\displaystyle x\leq y} one has f ( x ) ≤ f ( y ) {\displaystyle f\

Commutator - Wikipedia

https://en.wikipedia.org/wiki/Commutator_(ring_theory)
In linear algebra, if two endomorphisms of a space are represented by commuting matrices in terms of one basis, then they are so represented in terms of every basis

Cohen–Macaulay ring - Wikipedia

https://en.wikipedia.org/wiki/Unmixed_ideal
finitely generated) R-module M ≠ 0 {\displaystyle M\neq 0} is a Cohen–Macaulay module if d e p t h ( M ) = d i m ( M ) {\displaystyle \mathrm {depth} (M)=\mathrm {dim} (M)} (in general we have: d e p t h ( M ) ≤ d i m ( M ) {\displaystyle \mathrm {depth} (M)\leq \mathrm {dim} (M)} , see Auslander–Buchsbaum

Complex analysis - Wikipedia

https://en.wikipedia.org/wiki/Complex_analysis
Being able to move a given contour to a more suitable one often leads to major simplifications in proofs

Moment generating function - Wikipedia

https://en.wikipedia.org/wiki/Moment_generating_function
If the expectation does not exist in an open neighborhood of 0, we say that the moment generating function does not exist

Noncommutative ring - Wikipedia

https://en.wikipedia.org/wiki/Noncommutative_ring
It is common for noncommutative ring theorists to enforce a condition on one of these types of ideals while not requiring it to hold for the opposite side

Interval (mathematics) - Wikipedia

https://en.wikipedia.org/wiki/Interval_(mathematics)
[1] If the infimum does not exist and the interval is not empty, one says often that the corresponding endpoint is negative infinity, written − ∞

Lehmann–Scheffé theorem - Wikipedia

https://en.wikipedia.org/wiki/Lehmann%E2%80%93Scheff%C3%A9_theorem
This is where the Lehmann–Scheffé theorem comes in, if T {\displaystyle T} is also complete, that is, for any real-valued measurable function φ {\displaystyle \varphi } it holds E θ [ φ ( T ( X ) ) ] = 0 ⟹ φ ( T ( X ) ) = 0 P θ -a

Slavery in ancient Egypt - Wikipedia

https://en.wikipedia.org/wiki/Slavery_in_ancient_Egypt
Jump to content Main menu Main menu move to sidebar hide Navigation Main page Contents Current events Random article About Wikipedia Contact us Contribute Help Learn to edit Community portal Recent changes Upload file Special pages

Ideal (ring theory) - Wikipedia

https://en.wikipedia.org/wiki/Ideal_(ring_theory)
If the ring is commutative, the definitions of left, right, and two-sided ideal coincide, and one talks simply of an ideal

White noise - Wikipedia

https://en.wikipedia.org/wiki/White_noise
[3] In particular, if each sample has a normal distribution with zero mean, the signal is said to be additive white Gaussian noise

Semigroup - Wikipedia

https://en.wikipedia.org/wiki/Semigroup
In mathematical analysis, the term also appears in the theory of one-parameter operator semigroups: see C0-semigroup

Autoregressive conditional heteroskedasticity - Wikipedia

https://en.wikipedia.org/wiki/Autoregressive_conditional_heteroskedasticity
The ARCH model is appropriate when the error variance in a time series follows an autoregressive (AR) model; if an autoregressive moving average (ARMA) model is assumed for the error variance, the model is a generalized autoregressive conditional heteroskedasticity (GARCH) model

Projective variety - Wikipedia

https://en.wikipedia.org/wiki/Projective_varieties
A projective variety is a projective curve if its dimension is one; it is a projective surface if its dimension is two; it is a projective hypersurface if its dimension is one less than the dimension of the containing projective space; in this case it is the set of zeros of a single homogeneous polynomial