منابع مشابه
The Problem of the Pawns
In this paper we study the number Mm,n of ways to place nonattacking pawns on an m× n chessboard. We find an upper bound for Mm,n and analyse its asymptotic behavior. It turns out that limm,n→∞(Mm,n) 1/mn exists and is bounded from above by (1 + √ 5)/2. Also, we consider a lower bound for Mm,n by reducing this problem to that of tiling an (m + 1)× (n + 1) board with square tiles of size 1×1 and...
متن کاملSharing analysis in the Pawns compiler
Pawns is a programming language under development that supports algebraic data types, polymorphism, higher order functions and “pure” declarative programming. It also supports impure imperative features including destructive update of shared data structures via pointers, allowing significantly increased efficiency for some operations. A novelty of Pawns is that all impure “effects” must be made...
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Why is the academy in general, and philosophy in particular, not more involved in the fight against the creationist threat?Andwhy,when a response is offered, is it so curiously ineffective? I argue, by using an analogy with the battle against the Black Knight from the movie Monty Python and the Holy Grail, that the difficulty lies largely in a failure to see the nature of the problem clearly. B...
متن کاملThe Irrational Chess Knight
While in the univariate case solutions of linear recurrences with constant coeecients have rational generating functions, in the multivariate case the situation is much more interesting: even though initial conditions have rational generating functions, the corresponding solutions can have generating functions which are algebraic but not rational, and perhaps even non-algebraic. We start by an ...
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Background Asthenozoospermia accounts for almost 50% of the cases of male infertility. Our study investigating phosphoproteins differentially expressed in asthenozoosperm has identified the phosphoproteins relevant to sperm motility and the signature molecules likely to be altered in asthenozoospermia. The 66 phosphoproteins differentially expressed included four alpha tubulin isoforms which we...
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ژورنال
عنوان ژورنال: Future Healthcare Journal
سال: 2019
ISSN: 2514-6645,2514-6653
DOI: 10.7861/futurehosp.6-1-s56