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Что (кто) такое symmetric difference gate - определение

MATHEMATICAL DEFINITION IN SET THEORY

Symmetric set difference; Difference between sets; Symmetric difference of sets; Disjunctive union; Symmetric difference (set theory)

Symmetric difference

In mathematics, the symmetric difference of two sets, also known as the disjunctive union, is the set of elements which are in either of the sets, but not in their intersection. For example, the symmetric difference of the sets \{1,2,3\} and \{3,4\} is \{1,2,4\}.

https://en.wikipedia.org/wiki/Symmetric_difference

Just-noticeable difference

AMOUNT THAT A STIMULUS MUST BE CHANGED TO BE DETECTED

Jnd; Differential threshold; Difference threshold; Just-noticable difference; Difference limen; Just noticeable difference; Just noticeable differences

In the branch of experimental psychology focused on sense, sensation, and perception, which is called psychophysics, a just-noticeable difference or JND is the amount something must be changed in order for a difference to be noticeable, detectable at least half the time (absolute threshold). This limen is also known as the difference limen, difference threshold, or least perceptible difference.

https://en.wikipedia.org/wiki/Just-noticeable_difference

Elementary symmetric polynomial

HOMOGENEOUS SYMMETRIC POLYNOMIAL IN WHICH EACH POSSIBLE MONOMIAL OCCURS EXACTLY ONCE WITH COEFFICIENT 1

Elementary symmetric function; Elementary symmetric polynomials; Fundamental theorem of symmetric polynomials; Fundamental Theorem of Symmetric Polynomials

In mathematics, specifically in commutative algebra, the elementary symmetric polynomials are one type of basic building block for symmetric polynomials, in the sense that any symmetric polynomial can be expressed as a polynomial in elementary symmetric polynomials. That is, any symmetric polynomial is given by an expression involving only additions and multiplication of constants and elementary symmetric polynomials.

https://en.wikipedia.org/wiki/Elementary_symmetric_polynomial

Википедия

Symmetric difference

In mathematics, the symmetric difference of two sets, also known as the disjunctive union, is the set of elements which are in either of the sets, but not in their intersection. For example, the symmetric difference of the sets $\{1,2,3\}$ and $\{3,4\}$ is $\{1,2,4\}$ .

The symmetric difference of the sets A and B is commonly denoted by $A\ominus B,$ or $A\operatorname {\triangle } B.$

The power set of any set becomes an abelian group under the operation of symmetric difference, with the empty set as the neutral element of the group and every element in this group being its own inverse. The power set of any set becomes a Boolean ring, with symmetric difference as the addition of the ring and intersection as the multiplication of the ring.

https://en.wikipedia.org/wiki/Symmetric difference