Results 281 to 290 of about 660,490 (319)
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FLOER HOMOLOGY AND INVARIANTS OF HOMOLOGY COBORDISM
International Journal of Mathematics, 1998By using surgery techniques, we compute Floer homology for certain classes of integral homology 3-spheres homology cobordant to zero. We prove that Floer homology is two-periodic for all these manifolds. Based on this fact, we introduce a new integer valued invariant of integral homology 3-spheres.
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Homological stability for completed homology
Mathematische Annalen, 2015zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Calegari, Frank, Emerton, Matthew
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Fertility and Sterility, 1978
Between July 1, 1969, and October 31, 1977, 619 patients were evaluated for infertility. Homologous insemination (AIH) was employed in 53 patients, many of whom had other contributory causes of infertility. There have been 14 single pregnancies in 11 women, including 4 spontaneous abortions, 1 ectopic pregnancy, 8 term deliveries, and 1 pregnancy in ...
W C, Nunley +2 more
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Between July 1, 1969, and October 31, 1977, 619 patients were evaluated for infertility. Homologous insemination (AIH) was employed in 53 patients, many of whom had other contributory causes of infertility. There have been 14 single pregnancies in 11 women, including 4 spontaneous abortions, 1 ectopic pregnancy, 8 term deliveries, and 1 pregnancy in ...
W C, Nunley +2 more
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From Leibniz Homology to Cyclic Homology
K-Theory, 2002Given an algebra \(A\), the author constructs a natural homomorphism \(HL_{\ast+1}(A)\to HH_\ast(A)\) from Leibniz to Hochschild homology. If \(f: A\to B\) is a homorphism of algebras, the relative Leibniz homology \(HL_\ast(gl(f))\) is defined and a natural homomorphism \(HL_{\ast+1}(gl(f))\to HC_\ast(F)\) to relative cyclic homology is studied. Thus,
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Cladistics, 2014
AbstractHennig (1966) recognized symplesiomorphies as homologies, and that view is logically correct under the concept of homology (homogeny) prevalent among evolutionists since 1870. Nelson and Platnick (1981) instead wanted homology to exclude symplesiomorphies for reasons that they never made clear but which certainly included opposition to Hennig ...
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AbstractHennig (1966) recognized symplesiomorphies as homologies, and that view is logically correct under the concept of homology (homogeny) prevalent among evolutionists since 1870. Nelson and Platnick (1981) instead wanted homology to exclude symplesiomorphies for reasons that they never made clear but which certainly included opposition to Hennig ...
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Canadian Journal of Mathematics, 1978
There have been few published results concerning the relationship between the homology groups of branched and unbranched covering spaces of knots, despite the fact that these invariants are such powerful invariants for distinguishing knot types and have long been recognised as such [8]. It is well
Hartley, Richard, Murasugi, Kunio
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There have been few published results concerning the relationship between the homology groups of branched and unbranched covering spaces of knots, despite the fact that these invariants are such powerful invariants for distinguishing knot types and have long been recognised as such [8]. It is well
Hartley, Richard, Murasugi, Kunio
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Cladistics, 2012
AbstractA recent review of the homology concept in cladistics is critiqued in light of the historical literature. Homology as a notion relevant to the recognition of clades remains equivalent to synapomorphy. Some symplesiomorphies are “homologies” inasmuch as they represent synapomorphies of more inclusive taxa; others are complementary character ...
Andrew V Z, Brower, Mario C C, de Pinna
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AbstractA recent review of the homology concept in cladistics is critiqued in light of the historical literature. Homology as a notion relevant to the recognition of clades remains equivalent to synapomorphy. Some symplesiomorphies are “homologies” inasmuch as they represent synapomorphies of more inclusive taxa; others are complementary character ...
Andrew V Z, Brower, Mario C C, de Pinna
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Journal of Theoretical Biology, 1981
Abstract Every organism elaborating a connective tissue of which collagen is a component is descended from a unique organism, the collagen ancestor. The original gene for the ur-collagen was due to some ordered process in the Precambrian age between 1·3 and 2·1 billion years ago.
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Abstract Every organism elaborating a connective tissue of which collagen is a component is descended from a unique organism, the collagen ancestor. The original gene for the ur-collagen was due to some ordered process in the Precambrian age between 1·3 and 2·1 billion years ago.
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Confusing homologs as homologies: a reply to “On homology”
Cladistics, 2012David M, Williams, Malte C, Ebach
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American Journal of Physical Anthropology, 1978
AbstractA recently described juvenile specimen of Avahi was supposed to show that indriines have an unreplaced deciduous canine and that the indriine toothcomb was composed only of incisors. To the contrary, this specimen demonstrates quite dramatically a growth phenomenon earlier discussed: in indriines, the anteriormost of the four deciduous lower ...
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AbstractA recently described juvenile specimen of Avahi was supposed to show that indriines have an unreplaced deciduous canine and that the indriine toothcomb was composed only of incisors. To the contrary, this specimen demonstrates quite dramatically a growth phenomenon earlier discussed: in indriines, the anteriormost of the four deciduous lower ...
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