170 research outputs found
q-Analogues of the Barnes multiple zeta functions
In this paper, we introduce -analogues of the Barnes multiple zeta
functions. We show that these functions can be extended meromorphically to the
whole plane, and moreover, tend to the Barnes multiple zeta functions when
for all complex numbers.Comment: 13 page
Checkerboard style Schur multiple zeta values and odd single zeta values
We give explicit formulas for the recently introduced Schur multiple zeta
values, which generalize multiple zeta(-star) values and which assign to a
Young tableaux a real number. In this note we consider Young tableaux of
various shapes, filled with alternating entries like a Checkerboard. In
particular we obtain new sum representation for odd single zeta values in terms
of these Schur multiple zeta values. As a special case we show that some Schur
multiple zeta values of Checkerboard style, filled with 1 and 3, are given by
determinants of matrices with odd single zeta values as entries.Comment: 21 pages. Added Corollary 3.7 and the case (a,b)=(1,2) in Section
On Schur multiple zeta functions: A combinatoric generalization of multiple zeta functions
We introduce Schur multiple zeta functions which interpolate both the
multiple zeta and multiple zeta-star functions of the Euler-Zagier type
combinatorially. We first study their basic properties including a region of
absolute convergence and the case where all variables are the same. Then, under
an assumption on variables, some determinant formulas coming from theory of
Schur functions such as the Jacobi-Trudi, Giambelli and dual Cauchy formula are
established with the help of Macdonald's ninth variation of Schur functions.
Moreover, we investigate the quasi-symmetric functions corresponding to the
Schur multiple zeta functions. We obtain the similar results as above for them
and, furthermore, describe the images of them by the antipode of the Hopf
algebra of quasi-symmetric functions explicitly. Finally, we establish iterated
integral representations of the Schur multiple zeta values of ribbon type,
which yield a duality for them in some cases.Comment: 42 pages, 2 figure
Abductive Proof Procedure with Adjusting Derivations for General Logic Programs
In this paper, we formulate a new integrity constraint in correlation with 3-valued stable models in an abduction framework based on general logic programs. Under the constraint, not every ground atom or its negation is a logical consequence of the theory and an expected abductive explanation, but some atom may be unspecified as a logical consequence by an adjustment. As a reflection of the integrity constraint with an adjustment, we augment an adjusting derivation to Eshghi and Kowalski abductive proof procedure, in which such an unspecified atom can be dealt with
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