recurrent :: transient

platonic symmetry :: heraclitan flux

x --> known space :: known space --> x

coincidence :: contingency

internal :: external

content :: context

equilibrium :: cycle

constants :: variables

ex ante :: post facto

result :: validation

done :: to-do

input :: output

past :: future

before :: after

elapsed :: e.t.a

explain :: forecast

afferent :: efferent

action :: perception

systole :: diastole

inhale :: exhale

tonic :: phasic

lead :: follow

pump :: burn

source :: sink

floor :: ceiling

produce :: consume

buy long :: sell short

receivable :: payable

discounted :: compounded

top down :: bottom up

disjoint :: conjoint

needle :: haystack

digital :: analog

particle :: wave

split :: merge

read :: write

call :: put

stack :: queue

between :: among

offense :: defense

affirm :: backpedal

sensitivity :: specificity

keith david :: david keith

.

. .

.

object :: arrow

domain :: codomain

state :: transition

system :: process

solution :: constraint

existence :: uniqueness

series :: parallel

closed :: open

preserve :: reflect

coarsest :: finest

subset :: partition

equivalent :: isomorphic

concrete :: universal

theorem :: proof

if :: only if

initial :: final

set :: cat

{} :: {0}

{1} :: {0,1}

1-to-1 :: onto

monic :: epic

faithful :: full

0+1 :: 0x1

injective hull :: projective cover

controllable :: observable

0-->gb :: f0-->b

c-->axb :: c-->a,c-->b

c-->b^a :: cxa-->b

node deletion :: edge contraction

delaunay triangulation :: voronoi tessellation

convex hull of points and rays :: intersection of halfspaces

max-flow :: min-cut

dilation :: erosion

sine :: impulse

matrix :: transpose

discrete :: continuous

.

. .

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