the.com/equivalence
the art of proving two different things are secretly the same trick wearing two coats
means the state of being equal in value, function, or meaning, such that two different things can stand in for each other without loss.
from From Latin aequivalentia, built from aequus 'equal' and valere 'to be worth, to be strong' — the same valere that gives us 'value,' 'valiant,' and 'valid.' So at root it means 'worth the same,' two things that weigh equally on the scale. It came into English through Late Latin and Old French in the 1500s, first in logic and theology before lending itself to mathematics and chemistry.
- math symbol
- Gets three lines, not two, to outrank equals
- mass energy
- Einstein's E=mc2 made matter and energy interchangeable
- logic
- True only when both sides agree completely
- chemistry
- Equivalence point: where titration reactants exactly cancel out
- morphine dosing
- Doctors convert opioids using equivalence tables daily
for instance
logical equivalence — two statements in propositional logic that have identical truth values in all cases