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Umbral calculus

Known as: Umbral Operator, Umbral, Umbral algebra 
In mathematics before the 1970s, the term umbral calculus referred to the surprising similarity between seemingly unrelated polynomial equations and… Expand
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Papers overview

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Highly Cited
2012
Highly Cited
2012
We describe surprising relationships between automorphic forms of various kinds, imaginary quadratic number fields and a certain… Expand
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Highly Cited
2010
Highly Cited
2010
We present a radiative magnetohydrodynamics simulation of the formation of an active region (AR) on the solar surface. The… Expand
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Highly Cited
2006
Highly Cited
2006
Until 23 Nov 2003, no total solar eclipse (TSE) had ever been observed from the Antarctic. Yet, interest in securing observations… Expand
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Highly Cited
2005
Highly Cited
2005
Heterogeneity can be dealt with by defining homogeneous equivalent properties, known as averaging, or by trying to describe the… Expand
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Highly Cited
2003
Highly Cited
2003
In developing red data books of threatened species, the World Conservation Union uses measures of rarity, rates of decline, and… Expand
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Highly Cited
2002
Highly Cited
2002
Although habitat loss, fragmentation, and invasive species collectively pose the greatest threats to biodiversity, little… Expand
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Highly Cited
2001
Highly Cited
2001
Abstract: The Amazon basin is experiencing rapid forest loss and fragmentation. Fragmented forests are more prone than intact… Expand
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2001
2001
  • Li Guo
  • Adv. Appl. Math.
  • 2001
  • Corpus ID: 119173993
We apply recent constructions of free Baxter algebras to the study of the umbral calculus. We give a characterization of the… Expand
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1996
1996
`Umbral calculus' deals with representations of the canonical commutation relations. We present a short exposition of it and… Expand
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Highly Cited
1992
Highly Cited
1992
The Northern Spotted Owl (Strix occidentalis cau- rina) is closely associated witb mature and old-growth co- niferous forests in… Expand
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