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19932020
most citedHabitable Zones Around Main-Sequence Stars: New Estimates

1.6k citations

Showing 1995Show all

6 papers · 1 filter

q-alg1995★ 30 cited

Quantum Deformations of Conformal Algebras Introducing Fundamental Mass Parameters

Jerzy Lukierski, Pierre Minnaert, Marek Mozrzymas

We consider new class of classical r-matrices for D=3 and D=4 conformal Lie algebras. These r-matrices do satisfy the classical Yang-Baxter equation and as two-tensors belong to th…

math.CO1995

Symmetric chain decompositions of B_n and Pi_n

Erensto Damiani, Ottavio D'Antona, Daniel E. Loeb

We review the Green/Kleitman/Leeb interpretation of de Bruijn's symmetric chain decomposition of , and explain how it can be used to find a maximal collection of disj…

math.CO1995

A new proof of Monjardet's median theorem

Daniel E. Loeb

New proofs are given for Monjardet's theorem that all strong simple games (i.e., ipsodual elements of the free distributive lattice) can be generated by the median operation. Tight…

math.CO1995★ 1 cited

A generalization of the binomial coefficients

Daniel E. Loeb

We pose the question of what is the best generalization of the factorial and the binomial coefficient. We give several examples, derive their combinatorial properties, and demonstr…

math.CO1995★ 2 cited

Series with general exponents

Daniel E. Loeb

We define the Artinian and Noetherian algebra which consist of formal series involving exponents which are not necessarily integers. All of the usual operations are defined here an…

math.CO1995

A simpler characterization of Sheffer polynomial

Alessandro Di Bucchianico, Daniel E. Loeb

We characterize the Sheffer sequences by a single convolution identity where is a shift-invariant operator.…