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English BBS Semi-latest messages


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English BBS Picture list


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Screensaver for Win95,98


Voronoi diagram


Area of Voronoi region


Area of MW Voronoi Region


Area of AW Voronoi Region


Higher-order Voronoi diagram


Farthest-point Voronoi diagram


Higher-order Farthest-point Voronoi diagram


MW Voronoi diagram


AW Voronoi diagram


PW Voronoi diagram


CW Voronoi diagram


LW Voronoi diagram


Higher-order MW Voronoi diagram


Higher-order AW Voronoi diagram


Higher-order PW Voronoi diagram


Higher-order CW Voronoi diagram


Higher-order LW Voronoi diagram


Karlsruhe-metric Voronoi diagram


Higher-order Karlsruhe-metric Voronoi diagram


Elliptic Voronoi diagram


Higher-order Elliptic Voronoi diagram


Manhattan-metric Voronoi diagram


Higher-order Manhattan-metric Voronoi diagram


Farthest-Point Manhattan-metric Voronoi diagram


Supremum-metric Voronoi diagram


Higher-order supremum-metric Voronoi diagram


Line-segment Voronoi diagram


Line-segment Voronoi diagram whose segments sometimes cross each other


Line-segment Voronoi diagram whose segments need to cross each other


Largest empty circle in a polygon


Higher order Line-segment Voronoi diagram


Higher order Line-segment Voronoi diagram whose segments sometimes cross each other


Higher order Line-segment Voronoi diagram whose segments need to cross each other


Delaunay Tessellation


2nd order Delaunay Tessellation


3rd order Delaunay Tessellation


Farthest Delaunay Tessellation


Delaunay Tessellation some edges deleted


Extended Voronoi Edges


Voronoi area game for two


Voronoi area game for three


Voronoi area game for four


Voronoi area game for five


Voronoi area game for six


B-spline curve


X-dimension B-spline curve


Y-dimension B-spline curve


Higher-order Convex Hull B-spline curve


Catmull-Rom Spline tic


Bezier curve


X-dimension Bezier curve


Y-dimension Bezier curve


Higher-order Convex Hull Bezier curve


Whirlpool


Hilbert Curve(Variation 1)


Hilbert Curve(Variation 2)


Approximating Polygon of Hilbert Curve(Variation 1)


Approximating Polygon of Hilbert Curve(Variation 2)


TSP by using Hilbert Curve


TSP by using Approximating polygon of Hilbert Curve


Dog locustic diagram


Dog locustic diagram linear expression version


Dog locustic diagram quadratic expression version


Dog locustic diagram, expression of degree 3


Dog locustic diagram, expression of degree 4


Dog locustic diagram, expression of degree 5


Dog locustic diagram, expression of degree 6


Dog locustic diagram, expression of degree 7


Dog locustic diagram, expression of degree 50


Dog locustic diagram, expression of degree 100


Clump


Convex hull


Higher order convex hull


X-graph


Y-graph


Overlaid convex hulls from considering four color problem


Overlaid convex hulls from considering four color problem version 2


Overlaid convex hulls from considering four color problem two color version


Overlaid convex hulls from considering four color problem three color version


Overlaid convex hulls from considering four color problem five color version


Overlaid convex hulls from considering four color problem six color version


Overlaid convex hulls from considering four color problem one color version


Tile tessellation of Triangle


Tile tessellation of Regular triangle


Tile tessellation of Parallelogram


Tile tessellation of Triangle version 2


Tile tessellation of Parallelogram version 2


Tile tessellation of Quadrangle


Tile tessellation of Variation of Quadrangle


Tile tessellation of Type 1 of Hexagon


Variation of Tile tessellation of Type 2 of Hexagon


Gabriel graph


Relative neighborhood graph


Nearest point,farthest point pair pronlem


Higher order nearest point pronlem


2nd order nearest point pronlem


3rd order nearest point pronlem


Farthest point pronlem


Traveling route to some points


Perpendicular bisectors for TSP


Extended perpendicular bisectors for TSP


Minimum spanning tree problem


Network minimum spanning tree problem


Weighted network minimum spanning tree problem


Shortest path problem


Weighted Shortest path problem


Hakimi problem


Hakimi problem with weighted demands


Hakimi problem with weighted links


Hakimi problem with weighted demands and links


Weighted Weber problem


Unweighted Weber problem


Center problem


Largest empty circle problem


Largest empty ellipse problem


Traveling salesman problem with a lot of time


Traveling salesman problem with a lot of time version 2


Traveling salesman problem with a lot of time version 3; using Delaunay triangulation


Traveling salesman problem with a lot of time version 4; using Delaunay triangulation Part 2


Traveling salesman problem with a lot of time version 5; using incremental method and Delaunay triangulation


Traveling salesman problem with a lot of time, a variation; using incremental method and second order Delaunay triangulation


Traveling salesman problem with a lot of time, a variation 2; using incremental method and third order Delaunay triangulation


Traveling salesman problem with a lot of time version 8; more effort but not enough


Longestic traveling route


Longeric traveling route


Shortestic traveling route


Shorteric traveling route


Traveling salesman problem's heauristic algorithm


TSP(end point differs from startpoint)


TSP(start point is given and end point is arbitrary)


TSP(start point and end are given)


TSP(by Incremental method)


Steiner tree problem's heauristic algorithm


Points


Paths of salesman who doesn't have objective function


Overlaid Paths of salesman who doesn't have objective function


Segments which need not cross each other


Segments which do not cross each other


Segments which need to cross others


Linked segments


Linked segments with effort not to cross each other


Matchsticks which need not cross each other


Matchsticks which do not cross each other


Linked matchsticks


Linked matchsticks with effort not to cross each other


Circles


Circles which do not include others


Circles which do not include and cross others


Rectangles which have edges are parallel to x-axis, y-axis


Squares which have edges are parallel to x-axis, y-axis


Crossing line when going opposite side


Never crossing line segments


Line segments from points


Higher order ellipse(fictious)


Higher order ellipse(fictious,fictious)


Graphs of various functions


Newton method


Chord method


Secant method


Regula Falsi


Newton method for obtaining extremum


Chord method for obtaining extremum


Secant method for obtaining extremum


Regula Falsi for obtaining extremum


Gaussian Elimination


Gauss-Jordan method


Jacobi method 


Gauss Seidel method


Many method of simultaneous equations


LU decomposition


Cholesky method


periodic functions


Fourier series expansion for periodic functions


Fourier series expansion for non-periodic functions


Stokes' wave


Experiments of random variables of uniform distribution


Experiments of geometric distribution


Experiments of binomial distribution


Experiments of exponential distribution


Experiments of 1 coin


Experiments of coins, 2 - 10


Experiments of coins, 11 - 100


Experiments of coins, 101 - 1000


Experiments of coins, 1001 - 100000


Experiments of throwing 2 - 10 coins for counting l-th number


Experiments of throwing 11 - 100 coins for counting l-th number


Experiments of throwing 101 - 1000 coins for counting l-th number


1 Die Experiments


2 Dice Experiments


3 Dice Experiments


Dice Experiments, 4-10


Dice Experiments, 11-100


Dice Experiments, 101-1000


Dice Experiments, 1001-100000


Experiments of throwing 2-10 dice for counting l-th number


Experiments of throwing 11-100 dice for counting l-th number


Experiments of throwing 101-1000 dice for counting l-th number


Experiments of spinning 1 Roulette wheel, whose value is 0 to k, k is 2 to 9


Experiments of spinning 2 to 10 Roulette wheels, whose value is 0 to k, k is 2 to 9


Experiments of spinning 11 to 100 Roulette wheels, whose value is 0 to k, k is 2 to 9


Experiments of spinning 101 to 1000 Roulette wheels, whose value is 0 to k, k is 2 to 9


Experiments of counting the l-th smallest value by spinning 2 to 10 Roulette wheels, whose value is 0 to k, k is 2 to 9


Experiments of counting the l-th smallest value by spinning 11 to 100 Roulette wheels, whose value is 0 to k, k is 2 to 9


Experiments of counting the l-th smallest value by spinning 101 to 1000 Roulette wheels, whose value is 0 to k, k is 2 to 9


Experiments of spinning 1 Roulette wheel, whose value is 0 to k, k is 10 to 99


Experiments of spinning 2 to 10 Roulette wheels, whose value is 0 to k, k is 10 to 99


Experiments of spinning 11 to 100 Roulette wheels, whose value is 0 to k, k is 10 to 99


Experiments of spinning 101 to 1000 Roulette wheels, whose value is 0 to k, k is 10 to 99


Experiments of counting the l-th smallest value by spinning 2 to 10 Roulette wheels, whose value is 0 to k, k is 10 to 99


Experiments of counting the l-th smallest value by spinning 11 to 100 Roulette wheels, whose value is 0 to k, k is 10 to 99


Experiments of counting the l-th smallest value by spinning 101 to 1000 Roulette wheels, whose value is 0 to k, k is 10 to 99


Experiments of spinning 1 Roulette wheel, whose value is 0 to k, k is 100 to 999


Experiments of spinning 2 to 10 Roulette wheels, whose value is 0 to k, k is 100 to 999


Experiments of spinning 11 to 100 Roulette wheels, whose value is 0 to k, k is 100 to 999


Experiments of spinning 101 to 1000 Roulette wheels, whose value is 0 to k, k is 100 to 999


Experiments of counting the l-th smallest value by spinning 2 to 10 Roulette wheels, whose value is 0 to k, k is 100 to 999


Experiments of counting the l-th smallest value by spinning 11 to 100 Roulette wheels, whose value is 0 to k, k is 100 to 999


Experiments of counting the l-th smallest value by spinning 101 to 1000 Roulette wheels, whose value is 0 to k, k is 100 to 999


Experiments of counting the same number of the previous value by spinning Roulette


Experiments of rock-scissors-paper for two


Experiments of rock-scissors-paper, 3 - 10


Experiments of rock-scissors-paper, 11 - 100


Experiments for computing pi by plotting points


Experiments for computing pi by using inscribed regular polygon and circumscribed regular polygon


Experiments for computing pi by using inscribed non-regular polygon and circumscribed non-regular polygon


Experiments for computing pi by using Buffon's needle


Experiments of Monty Hall Problem using 3 doors


Experiments of Monty Hall Problem, 4 - 10


Experiments of Monty Hall Problem, 11 - 100


1 solo trip using random walk


two solo trips using random walk


solo trips using random walk, 3 - 10


solo trips using random walk, 11 - 100


solo trips using random walk, 101 - 1000


1 dimension random walk


Change of gambler's money of win-loss game


Change of gambler's money of betting races


Change of gambler's money of Lottery


Picture using random variables


Picture using random variables part 2


Picture of 2 colors from the inspiration of Richard Durrett's model


Picture of 3 colors from the inspiration of Richard Durrett's model


Picture from the inspiration of Richard Durrett's model, 4 - 10


Picture from the inspiration of Richard Durrett's model, 11 - 100


Picture from the inspiration of Richard Durrett's model, 101 - 1000


Picture from the inspiration of Richard Durrett's virus model


Birth-death model from the inspiration of Richard Durrett's model


Experiments of seat changing for 2 - 10 people


Experiments of seat changing for 11 - 100 people


Experiments of seat changing for 101 - 1000 people


n-adic number


n-adic number for decimal number


divisor


greatest common divisor


Experiment for comfirming that the probability that two natural numbers are disjoint is 6/(pi^2)


Experiment for counting GCD


factorization in prime numbers


least common multiple


Ball bounce in a square


Ball bounce in a circle


Ball bounce in a square with line segments


Some ball bounce in a square


Some ball bounce in a square with ball bombard


Some ball bounce in a square with line segments, with ball bombard


Voronoi diagram(Click version)


Area of Voronoi region(Click version)


Higher order Voronoi diagram(Click version)


Farthest-point Voronoi diagram(Click version)


Largest empty circle in a polygon(Click version)


Manhattan Voronoi diagram(Click version)


Supremum Voronoi diagram(Click version)


Karlsruhe Voronoi diagram(Click version)


HManhattan Voronoi diagram(Click version)


Farthest-Point Manhattan-metric Voronoi diagram(Click version)


HSupremum Voronoi diagram(Click version)


HKarlsruhe Voronoi diagram(Click version)


Delaunay Tessellation(Click version)


2nd order Delaunay Tessellation(Click version)


3rd order Delaunay Tessellation(Click version)


Farthest Delaunay Tessellation(Click version)


Voronoi area game for two(Click version)


Voronoi area game for three(Click version)


Voronoi area game for four(Click version)


Voronoi area game for five(Click version)


Voronoi area game for six(Click version)


Convex Hull(Click version)


Higher order convex hull(Click version)


X-grap(Click version)


Y-graph(Click version)


B-spline curve(Not coming back to 1)(Click version)


B-spline curve(Coming back to 1)(Click version)


X-dimension B-spline curve(Click version)


Y-dimension B-spline curve(Click version)


Higher-order Convex Hull B-spline curve(Click version)


Catmull-Rom spline cal curve(Click version)


Bezier curve(Not coming back to 0)(Click version)


Bezier curve(Coming back to 0)(Click version)


X-dimension Bezier curve(Click version)


Y-dimension Bezier curve(Click version)


Higher-order Convex Hull Bezier curve(Click version)


Clump(Click version)


Gabriel graph(Click version)


Relative neighborhood graph(Click version)


Minimum spanning tree problem(Click version)


Network minimum spanning tree problem(Click version)


Shortest path problem(Click version)


Hakimi Problem(Click version)


Nearest point,farthest point pair(Click version)


Higher order nearest point problem(Click version)


2nd nearest point problem(Click version)


3rd nearest point problem(Click version)


Farthest point problem(Click version)


Weber problem(Click version)


Center problem(Click version)


Largest empty circle problem(Click version)


Traveling salesman problem with a lot of time(Click version)


Traveling salesman problem with a lot of time version 2(Click version)


Traveling salesman problem with a lot of time version 3; using Delaunay triangulation(Click version)


Traveling salesman problem with a lot of time version 4; using Delaunay triangulation Part 2(Click version)


Traveling salesman problem with a lot of time version 5; using incremental method and Delaunay triangulation(Click version)


Traveling salesman problem with a lot of time, a variation; using incremental method and second order Delaunay triangulation(Click version)


Traveling salesman problem with a lot of time, a variation 2; using incremental method and third order Delaunay triangulation(Click version)


Traveling salesman problem with a lot of time version 8; more effort but not enough(Click version)


Traveling salesman problem's heauristic algorithm(Click version)


TSP(end point differs from startpoint)(Click version)


TSP(start point is given and end point is arbitrary)(Click version)


TSP(start point and end are given)(Click version)


Steiner tree problem's heauristic algorithm(Click version)


Crossing line when going opposite side(Click version)


Never crossing line segments(Click version)


Line segments from points(Click version)


Higher order ellipse(fictious)(Click version)


Higher order ellipse(fictious,fictious)(Click version)


M/M/1 Queue


M/M/2 Queue


Change of number of customers


Change of number of customers and services


Change of number of customers with hourly arrival rate


Noughts and Crosses for single use


Noughts and Crosses, vs Nirarebakun, you are first


Noughts and Crosses, vs Nirarebakun, you are second


Noughts and Crosses, watching one game


Noughts and Crosses, endless watching


Five-in-a-row for single use


Five-in-a-row, vs Nirarebakun, you are first


Five-in-a-row, vs Nirarebakun, you are second


Five-in-a-row, watching one game


Five-in-a-row, endless watching


m-in-a-row for single use


m-in-a-row, vs Nirarebakun, you are first


m-in-a-row, vs Nirarebakun, you are second


m-in-a-row, watching one game


m-in-a-row, endless watching


Reversi, endless watching


Hobbies


Favorite Classical Music


Favorite Books


Paintings
(It is very heavy)

Studying English
(It is very heavy)

True Character


Ending Message


Ending Message(Comical Version)