Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Johanna Langner"'
Publikováno v:
Die Materialwerkstatt, Vol 4, Iss 2 (2022)
Für Lehramtsstudierende im Fach Musik besteht eine zentrale Herausforderung darin, sich im Laufe ihres Studiums innerhalb der Pluralität oftmals unverbunden nebeneinanderstehender fachdidaktischer Konzeptionen zu orientieren. Dabei müssen sie nich
Externí odkaz:
https://doaj.org/article/14c2e3b109944408b288e3f8939d8201
Publikováno v:
Symmetry, Vol 12, Iss 12, p 2060 (2020)
We report a closed-form formula for the Zhang–Zhang polynomial (also known as ZZ polynomial or Clar covering polynomial) of an important class of elementary peri-condensed benzenoids Rbn1,n2,m1,m2, usually referred to as ribbons. A straightforward
Externí odkaz:
https://doaj.org/article/f2b841ff02994a75a464682ff896ddcb
Autor:
Henryk A. Witek, Johanna Langner
Publikováno v:
Symmetry, Vol 12, Iss 10, p 1599 (2020)
We present a complete set of closed-form formulas for the ZZ polynomials of five classes of composite Kekuléan benzenoids that can be obtained by overlapping two parallelograms: generalized ribbons Rb, parallelograms M, vertically overlapping parall
Externí odkaz:
https://doaj.org/article/d1f185b0ff6846b48baea2cff39f885e
Autor:
Henryk A. Witek, Johanna Langner
Publikováno v:
MATCH Communications in Mathematical and in Computer Chemistry. 87:585-620
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a143966843000d1d9f8a09f31c89f384
https://doi.org/10.46793/match.87-3.585l
https://doi.org/10.46793/match.87-3.585l
Publikováno v:
Journal of the Chinese Chemical Society. 68:1231-1242
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c289514def6a2484910eb7c037dd8e20
https://doi.org/10.1002/jccs.202000420
https://doi.org/10.1002/jccs.202000420
Publikováno v:
Symmetry, Vol 12, Iss 2060, p 2060 (2020)
Symmetry
Volume 12
Issue 12
Symmetry
Volume 12
Issue 12
We report a closed-form formula for the Zhang&ndash
Zhang polynomial (also known as ZZ polynomial or Clar covering polynomial) of an important class of elementary peri-condensed benzenoids Rbn1,n2,m1,m2, usually referred to as ribbons. A straigh
Zhang polynomial (also known as ZZ polynomial or Clar covering polynomial) of an important class of elementary peri-condensed benzenoids Rbn1,n2,m1,m2, usually referred to as ribbons. A straigh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28496e69f351bbba67badd19e54c60ef
https://www.mdpi.com/2073-8994/12/12/2060
https://www.mdpi.com/2073-8994/12/12/2060
Autor:
Johanna Langner, Henryk A. Witek
Publikováno v:
Discrete Applied Mathematics. 243:297-303
This paper offers a formal explanation of a rather puzzling and surprising equivalence between the Clar covering polynomials of single zigzag chains and the tiling polynomials of 2 × n rectangles for tilings using 1 × 2, 2 × 1 and 2 × 2 tiles. It
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6062404cbbf547008813ae9118c3ab25
https://doi.org/10.1016/j.dam.2018.02.019
https://doi.org/10.1016/j.dam.2018.02.019
Autor:
Johanna Langner, Henryk A. Witek
Publikováno v:
Journal of Mathematical Chemistry. 56:1393-1406
An alternative formulation of the theory of generalized resonance structures (Clar covers) of single zigzag chains N(n), based on the novel concept of interfaces, is presented. The global structure of every Clar cover can be conveniently expressed as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79da5db3f7366e5e06b5accc4f739fc0
https://doi.org/10.1007/s10910-018-0860-2
https://doi.org/10.1007/s10910-018-0860-2
Autor:
Johanna Langner, Henryk A. Witek
Publikováno v:
Croatica Chemica Acta
Volume 90
Issue 3
Volume 90
Issue 3
We present a graph-theoretical interpretation of the recently developed interface theory of single zigzag chains N(n) in form of connectivity graphs. A remarkable property of the connectivity graphs is the possibility of constructing the full set of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11c9fcaa9ddf1c27c5dfe39e13128f7b
https://doi.org/10.5562/cca3191
https://doi.org/10.5562/cca3191