Pushout vs Pushback - What's the difference?

As nouns the difference between pushout and pushback

is that pushout is (category theory) given a pair of morphisms

f:z\rightarrow x

and

g: z\rightarrow y

with a common domain, z'', their pushout is a pair of morphisms $i_1:x\rightarrow p$ and $i_2:y\rightarrow p$ as well as their common codomain, ''p'', such that the equation $i_1 \circ f = i_2 \circ g$ is satisfied, and for which there is the ''universal property'' that for any other object ''q for which there are also morphisms

j_1: x\rightarrow q

and

j_2: y\rightarrow q

; there is a unique morphism

u: p\rightarrow q

such that

u \circ i_1 = j_1

and

u \circ i_2 = j_2

while pushback is the act of repelling (an enemy, etc).

pushout

English

Noun

(en noun)

(category theory) Given a pair of morphisms

f:Z\rightarrow X

and

g: Z\rightarrow Y

with a common domain, Z'', their pushout is a pair of morphisms $i_1:X\rightarrow P$ and $i_2:Y\rightarrow P$ as well as their common codomain, ''P'', such that the equation $i_1 \circ f = i_2 \circ g$ is satisfied, and for which there is the ''universal property'' that for any other object ''Q for which there are also morphisms

j_1: X\rightarrow Q

and

j_2: Y\rightarrow Q

; there is a unique morphism

u: P\rightarrow Q

such that

u \circ i_1 = j_1

and

u \circ i_2 = j_2

Antonyms

* pullback

pushback

English

Alternative forms

* push back * push-back

Noun

The act of repelling (an enemy, etc).

A procedure in which an aircraft is pushed backwards away from the gate by some external force, usually a special tractor.

Criticism of or resistance to a proposal, stance, or event.

*19 December 2014 , Paul M Farber in (The Guardian) Online, Die-ins demand that we bear witness to black people's fears that they'll be next

*:We’ve seen that before, too: civil rights era sit-ins and freedom rides with multiracial participants drew the fierce ire of authorities alike, but black protesters were far more likely to be targeted with harsh jail sentences and violent pushback .

* March 01 2006 , Peter Grier, The Christian Science Monitor , headline of an article

More pushback from Hill on eavesdropping

* Sept 28 2006 , op-ed article on Bill Clinton, Washington Post:

Moreover, when Democrats, notably former House minority leader Richard Gephardt, finally put their heads up in the late spring of 2002 to ask questions about that Aug. 6, 2001, memo warning of the possibility of terrorist attacks, the Republican pushback was furious.

(rare, nonstandard) Backlash of any sort.