On the semigroup of order-preserving partial isometries of a finite chain with restricted range

2022 ◽  
Author(s):  
Worachead Sommanee ◽  
Jintana Sanwong
Keyword(s):  
Restricted Range ◽  
Finite Chain ◽  
Partial Isometries

scholarly journals On relative ranks of finite transformation semigroups with restricted range

2021 ◽  
Vol 73 (5) ◽  
pp. 617-626
Author(s):  
I. Dimitrova ◽  
J. Koppitz
Keyword(s):  
Restricted Range ◽  
Finite Chain ◽  
Transformation Semigroups ◽  
Relative Rank ◽  
Generating Sets ◽  
Finite Transformation

UDC 512.5 We determine the relative rank of the semigroup of all transformations on a finite chain with restricted range modulo the set of all orientation-preserving transformations in Moreover, we state the relative rank of the semigroup modulo the set of all order-preserving transformations in In both cases we characterize the minimal relative generating sets.  

scholarly journals COMBINATORIAL RESULTS FOR CERTAIN SEMIGROUPS OF ORDER-DECREASING PARTIAL ISOMETRIES OF A FINITE CHAIN

2018 ◽  
Vol 19 (1) ◽  
pp. 29-49
Author(s):  
F. Al-Kharousi ◽  
◽  
R. Kehinde ◽  
A. Umar ◽  
◽  
...  
Keyword(s):  
Finite Chain ◽  
Partial Isometries

scholarly journals ON THE SEMIGROUP OF ORDER-DECREASING PARTIAL ISOMETRIES OF A FINITE CHAIN

2018 ◽  
Vol 19 (1) ◽  
pp. 51-65
Author(s):  
R. Kehinde ◽  
◽  
S. O. Makanjuola ◽  
A. Umar ◽  
◽  
...  
Keyword(s):  
Finite Chain ◽  
Partial Isometries

scholarly journals On the Semigroup of Partial Isometries of a Finite Chain

2015 ◽  
Vol 44 (2) ◽  
pp. 639-647 ◽  
Author(s):  
F. Al-Kharousi ◽  
R. Kehinde ◽  
A. Umar
Keyword(s):  
Finite Chain ◽  
Partial Isometries

Ecology and biogeography in the introduction to “De bestiis marinis” by Georg Wilhelm Steller

2019 ◽  
Vol 46 (1) ◽  
pp. 63-74
Author(s):  
Stefano Mattioli
Keyword(s):  
Body Size ◽  
Phenotypic Plasticity ◽  
Geographical Distribution ◽  
Functional Traits ◽  
Marine Mammals ◽  
Main Part ◽  
Wide Distribution ◽  
Restricted Range ◽  
Direct Influence ◽  
Modern Biology

The rediscovery of the original, unedited Latin manuscript of Georg Wilhelm Steller's “De bestiis marinis” (“On marine mammals”), first published in 1751, calls for a new translation into English. The main part of the treatise contains detailed descriptions of four marine mammals, but the introduction is devoted to more general issues, including innovative speculation on morphology, ecology and biogeography, anticipating arguments and concepts of modern biology. Steller noted early that climate and food have a direct influence on body size, pelage and functional traits of mammals, potentially affecting reversible changes (phenotypic plasticity). Feeding and other behavioural habits have an impact on the geographical distribution of mammals. Species with a broad diet tend to have a wide distribution, whereas animals with a narrow diet more likely have only a restricted range. According to Steller, both sea and land then still concealed countless animals unknown to science.

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