Pullback vs Withdraw - What's the difference?

pullback | withdraw |

As a noun pullback

is the act or result of pulling back; a withdrawal.

As a verb withdraw is

to pull (something) back, aside, or away.

pullback

English

(wikipedia pullback)

Noun

(en noun)

The act or result of pulling back; a withdrawal.

(film) The act of drawing a camera back to broaden the visible scene.

That which holds back, or causes to recede; a drawback; a hindrance.

(architecture) The iron hook fixed to a casement to pull it shut, or to hold it partly open at a fixed point.

(finance) A reduction in the price of a financial instrument after reaching a peak

(category theory) Given a pair of morphisms

f:X\rightarrow Z

and

g: Y\rightarrow Z

with a common codomain, Z'', their pullback is a pair of morphisms $p_1:P\rightarrow X$ and $p_2:P\rightarrow Y$ as well as their common domain, ''P'', such that the equation $f\circ p_1 = g\circ p_2$ is satisfied, and for which there is the ''universal property'' that for any other object ''Q for which there are also morphisms

q_1: Q\rightarrow X

q_2: Q\rightarrow Y

; there is a unique morphism

u: Q\rightarrow P

such that

p_1\circ u = q_1

and

p_2 \circ u = q_2

Antonyms

* (category theory) pushout (Webster 1913)

withdraw

English

Verb

To pull (something) back, aside, or away.

* Hooker

Impossible it is that God should withdraw his presence from anything.

To take back (a comment, etc).

to withdraw false charges

To remove, to stop providing (one's support, etc).

To extract (money from an account).

To retreat.

To be in withdrawal from an addictive drug etc.

* 1994 , (Edward St Aubyn), Bad News , Picador 2006, p. 201:

Simon had tried to rob a bank while he was withdrawing , but he had been forced to surrender to the police after they had fired several volleys at him.