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  2. Mixed tensor - Wikipedia

    en.wikipedia.org/wiki/Mixed_tensor

    A mixed tensor of type or valence (), also written "type (M, N)", with both M > 0 and N > 0, is a tensor which has M contravariant indices and N covariant indices. Such a tensor can be defined as a linear function which maps an ( M + N )-tuple of M one-forms and N vectors to a scalar .

  3. Quizlet - Wikipedia

    en.wikipedia.org/wiki/Quizlet

    Quizlet's primary products include digital flash cards, matching games, practice electronic assessments, and live quizzes. In 2017, 1 in 2 high school students used Quizlet. [4] As of December 2021, Quizlet has over 500 million user-generated flashcard sets and more than 60 million active users. [5]

  4. Uses of English verb forms - Wikipedia

    en.wikipedia.org/wiki/Uses_of_English_verb_forms

    Use of present tense rather than future constructions in condition clauses and certain other dependent clauses is described below under {{Section link}}: required section parameter(s) missing and § Dependent clauses. The modal verbs will and shall also have other uses besides indicating future time reference. For example: I will pass this exam ...

  5. Sequence of tenses - Wikipedia

    en.wikipedia.org/wiki/Sequence_of_tenses

    In Latin, the sequence of tenses rule affects dependent verbs in the subjunctive mood, mainly in indirect questions, indirect commands, and purpose clauses. [4] If the main verb is in one of the non-past tenses, the subordinate verb is usually in the present or perfect subjunctive (primary sequence); if the main verb is in one of the past tenses, the subordinate verb is usually in the ...

  6. List of English irregular verbs - Wikipedia

    en.wikipedia.org/wiki/List_of_English_irregular...

    mix – mixed/mixt – mixed/mixt: Weak, regular, with alternative (mostly archaic) spelling mow – mowed – mowed/mown: Strong, class 7. Now regularized in past tense and sometimes in past participle. must – (no other forms) Defective; originally a preterite. See English modal verbs: need (needs/need) – needed – needed

  7. English conditional sentences - Wikipedia

    en.wikipedia.org/wiki/English_conditional_sentences

    [2] Were'd up: If I were king, I could have you thrown in the dungeon. The form "were" can also be used with an infinitive to form a future less vivid conditional. [3] Future Less Vivid: If I were to be king, I could have you thrown in the dungeon. Counterfactuals can also use the pluperfect instead of the past tense.

  8. Grammatical conjugation - Wikipedia

    en.wikipedia.org/wiki/Grammatical_conjugation

    In linguistics, conjugation (/ ˌ k ɒ n dʒ ʊ ˈ ɡ eɪ ʃ ən / [1] [2]) is the creation of derived forms of a verb from its principal parts by inflection (alteration of form according to rules of grammar). For instance, the verb break can be conjugated to form the words break, breaks, broke, broken and breaking.

  9. Kronecker product - Wikipedia

    en.wikipedia.org/wiki/Kronecker_product

    In mathematics, the Kronecker product, sometimes denoted by ⊗, is an operation on two matrices of arbitrary size resulting in a block matrix.It is a specialization of the tensor product (which is denoted by the same symbol) from vectors to matrices and gives the matrix of the tensor product linear map with respect to a standard choice of basis.