The term split exact sequence is used in two different ways by different people. Some people mean a short exact sequence that right-splits (thus corresponding...
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In mathematics, an exact sequence is a sequence of morphisms between objects (for example, groups, rings, modules, and, more generally, objects of an abelian...
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Pure submodule (redirect from Pure exact sequence)
direct limit of projective modules, and a pure exact sequence is a direct limit of split exact sequences. Let R be a ring (associative, with 1), let M...
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Splitting lemma (redirect from Splitting sequence)
holds, the sequence is called a split exact sequence, and the sequence is said to split. In the above short exact sequence, where the sequence splits, it...
9 KB (1,092 words) - 09:22, 27 January 2025
Projective module (section Split-exact sequences)
short exact sequence of modules of the form 0 → A → B → P → 0 {\displaystyle 0\rightarrow A\rightarrow B\rightarrow P\rightarrow 0} is a split exact sequence...
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mathematics, particularly homological algebra, an exact functor is a functor that preserves short exact sequences. Exact functors are convenient for algebraic calculations...
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properties of short exact sequences in an abelian category: E is closed under isomorphisms and contains the canonical ("split exact") sequences: M ′ → M ′ ⊕...
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as the subgroup of constant loops. Consequently, we arrive at a split exact sequence 1 → Ω G → L G → G → 1 {\displaystyle 1\to \Omega G\to LG\to G\to...
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words, there is a split exact sequence 1 → N → G → H → 1 {\displaystyle 1\to N\to G\to H\to 1} of groups (which is also known as a split extension of H {\displaystyle...
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destroyer Split, decommissioned in 1980 Yugoslav frigate Split, Koni-class Split (graph theory) Split (mathematics), a property of an exact sequence Split Lie...
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targets Krull–Schmidt theorem – Mathematical theorem Split exact sequence – Type of short exact sequence in mathematics Milnor, J.; Husemoller, D. (1973)...
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The split gene theory is a theory of the origin of introns, long non-coding sequences in eukaryotic genes between the exons. The theory holds that the...
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{\mathcal {A}},{\mathcal {B}}\rangle } as closer to a split exact sequence, because the exact sequence 0 → A → T → T / A → 0 {\displaystyle 0\to {\mathcal...
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Group extension (redirect from Split extension)
said that s splits the above exact sequence. Split extensions are very easy to classify, because an extension is split if and only if the group G is...
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Algebraic K-theory (section Long exact sequences)
relations for split exact sequences, not general exact sequences. In the category of projective modules over a ring, every short exact sequence splits, and...
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Fibration (redirect from Fibration sequence)
{\displaystyle S^{15}} are contractible to a point. Further the short exact sequences split and there are families of isomorphisms:: 111 π i ( S 4 ) ≅ π i...
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categories if n ≥ 5 {\displaystyle n\geq 5} , one has the following split-exact sequences: In the category of topological spaces 0 → Z 2 ∞ → MCG ( T n )...
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words to the database sequences. Repeat step 3 to 4 for each k-letter word in the query sequence. Scan the database sequences for exact matches with the remaining...
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various quite different settings that a short exact sequence often gives rise to a "long exact sequence". The concept of derived functors explains and...
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valuation of the discriminant, taken mod 2). One will then have a split exact sequence 0 → Z → W ( Q ) → Z / 2 ⊕ ⨁ p ≠ 2 W ( F p ) → 0 {\displaystyle...
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Künneth theorem (redirect from Künneth spectral sequence)
_{1}^{R}(H_{i}(X;R),H_{j}(Y;R))\to 0.} Furthermore, these sequences split, but not canonically. The short exact sequences just described can easily be used to compute...
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Ectrodactyly (redirect from Split hand/split foot malformation)
Ectrodactyly, split hand, or cleft hand (from Ancient Greek ἔκτρωμα (ektroma) 'miscarriage' and δάκτυλος (daktylos) 'finger') involves the deficiency...
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every short exact sequence 0 → Z → B → A → 0 {\displaystyle 0\rightarrow \mathbb {Z} \rightarrow B\rightarrow A\rightarrow 0} must split if B is also...
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extent to which taking invariants doesn't respect exact sequences. This is expressed by a long exact sequence. The collection of all G-modules is a category...
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+ [ N ] {\displaystyle [M\oplus N]=[M]+[N]} , because of the split short exact sequence 0 → M → M ⊕ N → N → 0. {\displaystyle 0\to M\to M\oplus N\to N\to...
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{\mathfrak {g}}^{\mathrm {red} }} . However, the corresponding short exact sequence 0 → n i l ( g ) → g → g r e d → 0 {\displaystyle 0\to {\mathfrak {nil}}({\mathfrak...
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Gene (redirect from Gene sequence)
conversely a gene may be split across chromosomes but those transcripts are concatenated back together into a functional sequence by trans-splicing. It is...
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Three-phase electric power (redirect from Phase sequence)
other indicator lights to show the sequence of voltages at the terminals for the given direction of shaft rotation. Split-phase electric power Used when three-phase...
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Dynamic programming (section Fibonacci sequence)
a decision by breaking it down into a sequence of decision steps over time. This is done by defining a sequence of value functions V1, V2, ..., Vn taking...
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confusion in determining the exact age of the Pan–Homo split is evidence of a more complex speciation process than a clean split between the two lineages...
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