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  2. English modal auxiliary verbs - Wikipedia

    en.wikipedia.org/wiki/English_modal_auxiliary_verbs

    The English modal auxiliary verbs are a subset of the English auxiliary verbs used mostly to express modality, properties such as possibility and obligation. [a] They can most easily be distinguished from other verbs by their defectiveness (they do not have participles or plain forms [b]) and by their lack of the ending ‑(e)s for the third-person singular.

  3. Necessity and sufficiency - Wikipedia

    en.wikipedia.org/wiki/Necessity_and_sufficiency

    In logic and mathematics, necessity and sufficiency are terms used to describe a conditional or implicational relationship between two statements.For example, in the conditional statement: "If P then Q", Q is necessary for P, because the truth of Q is guaranteed by the truth of P.

  4. Modal logic - Wikipedia

    en.wikipedia.org/wiki/Modal_logic

    For this reason, or perhaps for their familiarity and simplicity, necessity and possibility are often casually treated as the subject matter of modal logic. Moreover, it is easier to make sense of relativizing necessity, e.g. to legal, physical, nomological, epistemic, and so on, than it is to make sense of relativizing other notions.

  5. Sine qua non - Wikipedia

    en.wikipedia.org/wiki/Sine_qua_non

    A sine qua non (/ ˌ s aɪ n i k w eɪ ˈ n ɒ n, ˌ s ɪ n i k w ɑː ˈ n oʊ n /, [1] Latin: [ˈsɪnɛ kʷaː ˈnoːn]) or conditio sine qua non (plural: conditiones sine quibus non) is an indispensable and essential action, condition, or ingredient.

  6. Today’s NYT ‘Strands’ Hints, Spangram and Answers for Sunday ...

    www.aol.com/today-nyt-strands-hints-spangram...

    Here are the first two letters for each word: WA. WA. CR. FU. QU. GI. LU (SPANGRAM) NYT Strands Spangram Answer Today. Today's spangram answer on Sunday, December 15, 2024, is LUNARPHASE.

  7. Necessary - Wikipedia

    en.wikipedia.org/wiki/Necessary

    Necessary and sufficient condition, in logic, something that is a required condition for something else to be the case; Necessary proposition, in logic, a statement about facts that is either unassailably true (tautology) or obviously false (contradiction) Metaphysical necessity, in philosophy, a truth which is true in all possible worlds

  8. Today's Wordle Hint, Answer for #1270 on Tuesday, December 10 ...

    www.aol.com/todays-wordle-hint-answer-1270...

    Related: 16 Games Like Wordle To Give You Your Word Game Fix More Than Once Every 24 Hours We'll have the answer below this friendly reminder of how to play the game .

  9. Necessity is the mother of invention - Wikipedia

    en.wikipedia.org/wiki/Necessity_is_the_mother_of...

    One of the earliest recorded instances of the proverb is in one of Aesop’s Fables, “The Crow and the Pitcher” from the mid 6th century BCE. Plato's Republic says "our need will be the real creator", [5] which Jowett's 1894 translation rendered loosely as "The true creator is necessity, who is the mother of our invention."