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  • 1
    Electronic Resource
    Electronic Resource
    The groupsN r K 0(ℤπ) are finitely generated ℤ[ℕ r ]-modules if π is a finite group (1995)
    Springer
    K-Theory 9 (1995), S. 1-11 
    Details
    ISSN: 1573-0514
    Keywords: NikK-theory ; finitely generated ; group-ring ; verschiebung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract The NilK-theory groups or a ring,N r K i (R), are never finitely generated Abelian groups unless they are zero. But we show here thatN r K i (R) is a commutative ring,Z[N r ], whereN is the monoid of positive integers. We then further show that, for any finite group π, the Nil group,N r K 0(Z[π]), is a finitely generatedZ[N r ] module. It is annihilated by a power of the order of π
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00965456
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  • 2
    Electronic Resource
    Electronic Resource
    Systematic relationships of theLactoridaceae, an endemic family of the Juan Fernandez Islands, Chile (1986)
    Springer
    Plant systematics and evolution 152 (1986), S. 243-266 
    Details
    ISSN: 1615-6110
    Keywords: Primitive Angiosperms ; Lactoridaceae ; Lactoris ; Magnoliidae ; Magnoliales ; Laurales ; Piperales ; Chloranthales ; Flora of Juan Fernandez Islands ; Chile ; Cladistics ; phenetics ; phyletics ; phylogeny ; angiosperm evolution ; angiosperm origin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The systematic relationships ofLactoridaceae are problematical, with alternative assignments toMagnoliales, Laurales, andPiperales. Phenetic analyses suggest thatLactoridaceae are best accomodated withinMagnoliales and are most closely related toAnnonaceae. Cladistic analyses indicate that the family is a relatively derived member of theMagnoliales, with affinities toAnnonaceae, Eupomatiaceae, Himantandraceae, andMyristicaceae. These analyses together with fossil pollen data are used to interpret the phylogeny ofLactoridaceae and its relatives.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00989431
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  • 3
    Electronic Resource
    Electronic Resource
    Ribosomal and chloroplast DNA restriction site mutations and the radiation ofRobinsonia (Asteraceae: Senecioneae) on the Juan Fernandez Islands (1993)
    Springer
    Plant systematics and evolution 184 (1993), S. 233-239 
    Details
    ISSN: 1615-6110
    Keywords: Angiosperms ; Asteraceae ; Robinsonia ; Adaptive radiation ; chloroplast DNA ; ribosomal DNA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Restriction site mutations in the chloroplast (cpDNA) and ribosomal DNA (rDNA) were examined in 41 populations representing five of the seven recognized species of the genusRobinsonia, which is endemic to the Juan Fernandez Islands. No intraspecific variation was detected for cpDNA but one population of one of the species (R. evenia) had a restriction site mutation in rDNA not detected elsewhere. No restriction site mutations were unique to all species ofRobinsonia relative to the species ofSenecio used as outgroups. All 13 mutations (eight from cpDNA and five from rDNA) are restricted to single species, and thus provide no cladistically useful information within the genus. The distribution of mutations is concordant with the hypothesis of a rapid adaptive radiation ofRobinsonia subsequent to the dispersal of its ancestor to Masatierra.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00937437
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