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  2. Grammatical conjugation - Wikipedia

    en.wikipedia.org/wiki/Grammatical_conjugation

    For example, Latin is said to have four conjugations of verbs. This means that any regular Latin verb can be conjugated in any person, number, tense, mood, and voice by knowing which of the four conjugation groups it belongs to, and its principal parts.

  3. Regular and irregular verbs - Wikipedia

    en.wikipedia.org/wiki/Regular_and_irregular_verbs

    Examples of this are the English verbs lay and pay. In terms of pronunciation, these make their past forms in the regular way, by adding the /d/ sound. However their spelling deviates from the regular pattern: they are not spelt (spelled) "layed" and "payed" (although the latter form is used in some e.g. nautical contexts as "the sailor payed ...

  4. Conjugated system - Wikipedia

    en.wikipedia.org/wiki/Conjugated_system

    Cinnamaldehyde is a naturally-occurring compound that has a conjugated system penta-1,3-diene is a molecule with a conjugated system Diazomethane conjugated pi-system. In theoretical chemistry, a conjugated system is a system of connected p-orbitals with delocalized electrons in a molecule, which in general lowers the overall energy of the molecule and increases stability.

  5. Complex conjugate - Wikipedia

    en.wikipedia.org/wiki/Complex_conjugate

    Geometric representation (Argand diagram) of and its conjugate ¯ in the complex plane.The complex conjugate is found by reflecting across the real axis.. In mathematics, the complex conjugate of a complex number is the number with an equal real part and an imaginary part equal in magnitude but opposite in sign.

  6. Latin tenses - Wikipedia

    en.wikipedia.org/wiki/Latin_tenses

    A third type of periphrastic conjugation, which eventually developed into the perfect or pluperfect tenses in Romance languages such as Italian and French, is formed from the accusative perfect participle (ductum, ductam, ductōs etc., according to the gender and number of the object) combined with various tenses of habeō 'I have', for example ...

  7. Proto-Indo-European verbs - Wikipedia

    en.wikipedia.org/wiki/Proto-Indo-European_verbs

    This development is very clearly attested in the later Germanic languages. Afrikaans is an extreme example, where almost all verbs follow the same conjugational pattern. English is also a strong example, where all weak verb classes have merged, many older strong verbs have become weak, and all other verbs are considered irregular relic formations.

  8. Tagalog grammar - Wikipedia

    en.wikipedia.org/wiki/Tagalog_grammar

    Dumatíng (has) arrived ang the lalaki. man Dumatíng ang lalaki. {(has) arrived} the man "The man arrived." ex: Nakita saw ni Juan by (the) Juan si María. (the) María Nakita {ni Juan} {si María.} saw {by (the) Juan} {(the) María} "Juan saw María." Note that in Tagalog, even proper nouns require a case marker. ex: Pupunta will go siná PL. NOM. ART Elena Elena at and Roberto Roberto sa at ...

  9. Racks and quandles - Wikipedia

    en.wikipedia.org/wiki/Racks_and_quandles

    In fact, every equational law satisfied by conjugation in a group follows from the quandle axioms. So, one can think of a quandle as what is left of a group when we forget multiplication, the identity, and inverses, and only remember the operation of conjugation. Every tame knot in three-dimensional Euclidean space has a 'fundamental quandle'.