• Title/Summary/Keyword: Mathematical constants

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MATHEMATICAL CONSTANTS ASSOCIATED WITH THE MULTIPLE GAMMA FUNCTIONS

  • Jung, Myung-Ho;Cho, Young-Joon;Choi, June-Sang
    • East Asian mathematical journal
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    • v.21 no.1
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    • pp.77-103
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    • 2005
  • The theory of multiple Gamma functions was studied in about 1900 and has, recently, been revived in the study of determinants of Laplacians. There is a class of mathematical constants involved naturally in the multiple Gamma functions. Here we summarize those mathematical constants associated with the Gamma and multiple Gamma functions and will show how they are involved, if possible.

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Mathematical Constants for Non-Destructive Rapid Method of Leaf Area Determination in Mulberry (Morus spp.)

  • Singhal, B.K.;Dhar, Anil;Sharma, Aradhana;Jand, Seema;Bindroo, B.B.;Saxena, N.N.;Khan, M.A.
    • International Journal of Industrial Entomology and Biomaterials
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    • v.6 no.2
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    • pp.139-143
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    • 2003
  • Mathematical constants for multiplication with leaf length (I) or breadth (b) or l ${\times}$ b have been worked out for determining leaf area in promising mulberry genotypes viz., Chinese White, S-146, Chak Majra and Sujanpur Local of sub-tropical India. When pooled, the mathematical constants worked out were 8.1132, 10.1019 and 0.5992 for multiplication with leaf length, breadth and l ${\times}$ b, respectively, for genotypes bearing un-lobbed leaves and 6.9447, 8.2761 and 0.5009 for multiplication with leaf length, breadth and l ${\times}$ b, respectively for genotypes bearing lobbed leaves. Leaf area can be worked out by using any constant by multiplying either with leaf length or breadth or both (l ${\times}$ b). Estimated leaf areas worked out were found significantly and positively correlated with actual leaf area (r=999$^{**}$). The suggested present non-destructive method by using mathematical constants is very quick and alternative to electronic leaf area meter for spot leaf area determination in mulberry which is the only food source for mulberry silkworm in sericulture industry.

THREE GEOMETRIC CONSTANTS FOR MORREY SPACES

  • Gunawan, Hendra;Kikianty, Eder;Sawano, Yoshihiro;Schwanke, Christopher
    • Bulletin of the Korean Mathematical Society
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    • v.56 no.6
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    • pp.1569-1575
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    • 2019
  • In this paper we calculate three geometric constants, namely the von Neumann-Jordan constant, the James constant, and the Dunkl-Williams constant, for Morrey spaces and discrete Morrey spaces. These constants measure uniformly nonsquareness of the associated spaces. We obtain that the three constants are the same as those for $L^1$ and $L^{\infty}$ spaces.

COMPETING CONSTANTS FOR THE SOBOLEV TRACE INEQUALITY

  • Park, Young Ja
    • Journal of the Chungcheong Mathematical Society
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    • v.22 no.2
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    • pp.287-291
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    • 2009
  • A comparison of constants is given to show that a better constant for the Sobolev trace inequality can be obtained from the conjectured extremal function.

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CERTAIN INTEGRAL REPRESENTATIONS OF GENERALIZED STIELTJES CONSTANTS γk(a)

  • Shin, Jong Moon
    • East Asian mathematical journal
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    • v.31 no.1
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    • pp.41-53
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    • 2015
  • A large number of series and integral representations for the Stieltjes constants (or generalized Euler-Mascheroni constants) ${\gamma}_k$ and the generalized Stieltjes constants ${\gamma}_k(a)$ have been investigated. Here we aim at presenting certain integral representations for the generalized Stieltjes constants ${\gamma}_k(a)$ by choosing to use four known integral representations for the generalized zeta function ${\zeta}(s,a)$. As a by-product, our main results are easily seen to specialize to yield those corresponding integral representations for the Stieltjes constants ${\gamma}_k$. Some relevant connections of certain special cases of our results presented here with those in earlier works are also pointed out.

EQUIVALENCE CONSTANTS FOR THE 𝑙p-NORMS AND THE 𝑙q-SYMMETRIC MULTILINEAR OPERATOR NORMS OF VECTORS IN ℂn

  • Kim, Sung Guen
    • Communications of the Korean Mathematical Society
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    • v.35 no.2
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    • pp.565-570
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    • 2020
  • We investigate the best equivalence constants for the 𝑙p-norms and the 𝑙q-symmetric multilinear operator norms of vectors in ℂn which are induced by symmetric n-linear forms. In this paper, we provides estimates which are either best possible or close to best possible.

ON BEST CONSTANTS IN SOME WEAK-TYPE INEQUALITIES

  • Mok, Jin-Sik
    • Communications of the Korean Mathematical Society
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    • v.10 no.2
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    • pp.401-407
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    • 1995
  • The best constants for two distinct weak-type inequalities for martingales and their differential subordinates with values in some spaces isomorphic to a Hilbert space are shown to be the same. This extends the result of Burkholder shown in the Hilbert space setting.

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OKOUNKOV BODIES AND ZARISKI DECOMPOSITIONS ON SURFACES

  • Choi, Sung Rak;Park, Jinhyung;Won, Joonyeong
    • Bulletin of the Korean Mathematical Society
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    • v.54 no.5
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    • pp.1677-1697
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    • 2017
  • The purpose of this paper is to investigate the close relation between Okounkov bodies and Zariski decompositions of pseudoeffective divisors on smooth projective surfaces. Firstly, we completely determine the limiting Okounkov bodies on such surfaces, and give applications to Nakayama constants and Seshadri constants. Secondly, we study how the shapes of Okounkov bodies change as we vary the divisors in the big cone.