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  2. List of mathematical abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical...

    Alt – alternating group (Alt(n) is also written as A n.) A.M. – arithmetic mean. AP – arithmetic progression. arccos – inverse cosine function. arccosec – inverse cosecant function. (Also written as arccsc.) arccot – inverse cotangent function. arccsc – inverse cosecant function. (Also written as arccosec.) arcexc – inverse ...

  3. Series-parallel partial order - Wikipedia

    en.wikipedia.org/wiki/Series-parallel_partial_order

    In order-theoretic mathematics, a series-parallel partial order is a partially ordered set built up from smaller series-parallel partial orders by two simple composition operations. [ 1 ] [ 2 ] The series-parallel partial orders may be characterized as the N-free finite partial orders; they have order dimension at most two.

  4. List of 7400-series integrated circuits - Wikipedia

    en.wikipedia.org/wiki/List_of_7400-series...

    The following is a list of 7400-series digital logic integrated circuits. In the mid-1960s, the original 7400-series integrated circuits were introduced by Texas Instruments with the prefix "SN" to create the name SN74xx.

  5. Circuit topology (electrical) - Wikipedia

    en.wikipedia.org/wiki/Circuit_topology_(electrical)

    Series and parallel topologies can continue to be constructed with greater and greater numbers of branches ad infinitum. The number of unique topologies that can be obtained from nN {\displaystyle n\in \mathbb {N} } series or parallel branches is 1, 2, 4, 10, 24, 66, 180, 522, 1532, 4624, … {\displaystyle \dots } (sequence A000084 in the ...

  6. Series-parallel - Wikipedia

    en.wikipedia.org/wiki/Series-parallel

    The expression series-parallel can apply to different domains: Series and parallel circuits for electrical circuits and electronic circuits; Series-parallel partial order, in partial order theory; Series–parallel graph in graph theory; Series–parallel networks problem, a combinatorial problem about series–parallel graphs

  7. Mnemonic major system - Wikipedia

    en.wikipedia.org/wiki/Mnemonic_major_system

    The alveolar stops /t/ and /d/ form a voiceless and voiced pair, as do the similar-sounding dental fricatives /θ/ and /ð/, though some variant systems may omit the latter pair. 2 /n/ n: Upper case N and lower case n each have two vertical strokes and two points on the baseline. 3 /m/ m: Lower case m has three vertical strokes.

  8. Series–parallel graph - Wikipedia

    en.wikipedia.org/wiki/Seriesparallel_graph

    Indeed, a graph has treewidth at most 2 if and only if it has branchwidth at most 2, if and only if every biconnected component is a seriesparallel graph. [4] [5] The maximal seriesparallel graphs, graphs to which no additional edges can be added without destroying their seriesparallel structure, are exactly the 2-trees.

  9. Glossary of Principia Mathematica - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_Principia...

    D Domain of a relation (αDR means α is the domain of R). *33.01 D (Upside down D) Codomain of a relation *33.02 C (Initial letter of the word "campus", Latin for "field".) The field of a relation, the union of its domain and codomain *32.03 F The relation indicating that something is in the field of a relation *32.04 |