- Also called material implication. the relation between two propositions such that the second is not false when the first is true.
- Also called material equivalence. the relation between two propositions such that they are either both true or both false.
- the relation between two propositions such that each logically implies the other.
Origin of equivalence
OTHER WORDS FROM equivalencenon·e·quiv·a·lence, noun
Words nearby equivalence
How to use equivalence in a sentence
With subtlety and a solemnity reflecting key events in Claire’s past, Evans offers a powerful refusal of the false equivalence.In Danielle Evans’s ‘The Office of Historical Corrections,’ the sorrows are personal but also deeply historical|Chaya Bhuvaneswar|January 15, 2021|Washington Post
There is no decision on so-called equivalence, which would allow firms to sell their services into the single market from the City of London.The key terms of the Brexit trade deal: Everything you need to know|Rachel King|December 25, 2020|Fortune
Many scientists suspect that the new theory will violate the equivalence principle by an amount too small to have been detected with tests performed thus far.Galileo’s famous gravity experiment holds up, even with individual atoms|Emily Conover|October 28, 2020|Science News
Last year, the EU withdrew equivalence from Switzerland, effectively prohibiting the trading of EU-listed securities there.In London, a Europe-heavy stock exchange is facing down Brexit|kdunn6|October 8, 2020|Fortune
Riehl hopes that their reframing will make higher category theory accessible to more mathematicians while offering new insights into why the mathematics of equivalence is so powerful.Conducting the Mathematical Orchestra From the Middle|Rachel Crowell|September 2, 2020|Quanta Magazine
Bratton might have said something that was closer to a real-world moral equivalence.
He was trying, I think, to demonstrate balance and equivalence.
And no one is better equipped to refute this false equivalence than Mack herself.Stop Blaming Christy Mack: Porn Stars Don’t Deserve to Be Beaten|Samantha Allen|August 13, 2014|DAILY BEAST
The equivalence between comic books and Scripture is telling of how seriously canon is taken by these fans.DC Comics’ Diversity Crisis: Why the Status Quo Rules|Liz Watson|July 20, 2014|DAILY BEAST
Moral equivalence and malaise, rather than red-hot ideology, motivates Haydon.Iran’s Top Spy Is the Modern-Day Karla, John Le Carré’s Villainous Mastermind|Michael Weiss|July 2, 2014|DAILY BEAST
The several forms of energy are interconvertible, and possess an exact quantitative equivalence.A History of the Growth of the Steam-Engine|Robert H. Thurston
Written language is thus a point-to-point equivalence, to borrow a mathematical phrase, to its spoken counterpart.Language|Edward Sapir
Those of most other countries have either not yet been fully studied or their exact equivalence remains undetermined.Mythical Monsters|Charles Gould
The experiments of Rumford, Davy, and Joule were instrumental in establishing the equivalence of mechanical energy and heat.The New Gresham Encyclopedia|Various
The exact equivalence between the mechanical energy lost and the heat produced is the thing to be especially noticed here.
British Dictionary definitions for equivalence
- the relationship between two statements, each of which implies the other
- Also called: biconditional the binary truth-function that takes the value true when both component sentences are true or when both are false, corresponding to English if and only if . Symbol: ≡ or ↔, as in –(p ∧ q) ≡ – p ∨ – q