Gene and Genome Duplication in Spiders. [PDF]
J Exp Zool B Mol Dev EvolIn chelicerates whole genome duplications (WGDs) were identified in distinct groups. While there is evidence that Xiphosurans/horseshoe crabs had three rounds of WGD and arachnopulmonates (e.g. spiders and scorpions) had one WGD, in many other arachnid groups no WGD was identified.
Munegowda C +3 more
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Invasive Spiders and Their Microbiomes: Patterns of Microbial Variation in Native and Invasive Species in Hawai'i. [PDF]
Ecol EvolWe investigated how gut microbiota and endosymbionts influence the success of native and invasive spiders in Hawaiian and mainland environments. Gut microbial composition was shaped more by local environmental conditions than invasion status, whereas invasive species generally harbored fewer endosymbionts, with abundance varying by site. These findings
Pfau MJ +5 more
europepmc +2 more sources
The q-Sheffer sequences of a new type and associated orthogonal polynomials
Linear Algebra and its Applications, 2015 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gi‐Sang Cheon, Ji-Hwan Jung
openalex +2 more sources
Study of degenerate derangement polynomials by λ-umbral calculus
Demonstratio Mathematica, 2023 In the 1970s, Rota began to build completely rigid foundations for the theory of umbral calculus based on relatively modern ideas of linear functions and linear operators.
Yun Sang Jo, Park Jin-Woo
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Phosphorus starvation induces the synthesis of novel lipid class diacylglyceryl glucuronide and diacylglyceryl-N,N,N-trimethylhomoserine in two species of cold-adapted microalgae Raphidonema (Chlorophyta). [PDF]
Plant JSUMMARY Microalgae possess diverse lipid classes as components of structural membranes and have adopted various lipid remodeling strategies involving phospholipids to cope with a phosphorus (P)‐limited environment. Here, we report a unique adaptative strategy to P deficient conditions in two cold‐adapted microalgae, Raphidonema monicae and Raphidonema ...
Suzuki H +6 more
europepmc +2 more sources
A simpler characterization of Sheffer polynomial [PDF]
, 1994 We characterize the Sheffer sequences by a single convolution identity $$ F^{(y)} p_{n}(x) = \sum _{k=0}^{n}\ p_{k}(x)\ p_{n-k}(y)$$ where $F^{(y)}$ is a shift-invariant operator.
Di Bucchianico, Alessandro +1 more
core +6 more sources
Degenerate Catalan-Daehee numbers and polynomials of order r arising from degenerate umbral calculus
AIMS Mathematics, 2022 Many mathematicians have studied degenerate versions of some special polynomials and numbers that can take into account the surrounding environment or a person's psychological burden in recent years, and they've discovered some interesting results ...
Hye Kyung Kim, Dmitry V. Dolgy
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Representations of modified type 2 degenerate poly-Bernoulli polynomials
AIMS Mathematics, 2022 Research on the degenerate versions of special polynomials provides a new area, introducing the λ-analogue of special polynomials and numbers, such as λ-Sheffer polynomials.
Jongkyum Kwon +3 more
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Barnes-type Daehee polynomials [PDF]
, 2014 In this paper, we consider Barnes-type Daehee polynomials of the first kind and of the second kind. From the properties of Sheffer sequences of these polynomials arising from umbral calculus, we derive new and interesting identities.Comment: 34 ...
Kim, Dae San +3 more
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New Bell–Sheffer Polynomial Sets
Axioms, 2018 In recent papers, new sets of Sheffer and Brenke polynomials based on higher order Bell numbers, and several integer sequences related to them, have been studied. The method used in previous articles, and even in the present one, traces back to preceding
Pierpaolo Natalini, Paolo Emilio Ricci
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