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Discrete Mathematics and Combinatorics Commons™
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Articles 1 - 3 of 3
Full-Text Articles in Discrete Mathematics and Combinatorics
Tiling Rectangles And 2-Deficient Rectangles With L-Pentominoes, Monica Kane
Tiling Rectangles And 2-Deficient Rectangles With L-Pentominoes, Monica Kane
Rose-Hulman Undergraduate Mathematics Journal
We investigate tiling rectangles and 2-deficient rectangles with L-pentominoes. First, we determine exactly when a rectangle can be tiled with L-pentominoes. We then determine locations for pairs of unit squares that can always be removed from an m × n rectangle to produce a tileable 2-deficient rectangle when m ≡ 1 (mod 5), n ≡ 2 (mod 5) and when m ≡ 3 (mod 5), n ≡ 4 (mod 5).
Structure Of Number Theoretic Graphs, Lee Trent
Structure Of Number Theoretic Graphs, Lee Trent
Mathematical Sciences Technical Reports (MSTR)
The tools of graph theory can be used to investigate the structure
imposed on the integers by various relations. Here we investigate two
kinds of graphs. The first, a square product graph, takes for its vertices
the integers 1 through n, and draws edges between numbers whose product
is a square. The second, a square product graph, has the same vertex set,
and draws edges between numbers whose sum is a square.
We investigate the structure of these graphs. For square product
graphs, we provide a rather complete characterization of their structure as
a union of disjoint complete graphs. For …
A New Method To Compute The Hadamard Product Of Two Rational Functions, Ishan Kar
A New Method To Compute The Hadamard Product Of Two Rational Functions, Ishan Kar
Rose-Hulman Undergraduate Mathematics Journal
The Hadamard product (denoted by∗) of two power series A(x) =a0+a1x+a2x2+···and B(x) =b0+b1x+b2x2+··· is the power series A(x)∗B(x) =a0b0+a1b1x+a2b2x2+···. Although it is well known that the Hadamard product of two rational functions is also rational, a closed form expression of the Hadamard product of rational functions has not been found. Since any rational power series can be expanded by partial fractions as a polynomial plus a sum of power series …