New in MathWorld -- February 2009
Saturday February 28, 2009
- Irreducible Pseudoperfect Number
- Menger Cube
- Primitive Pseudoperfect Number (modified)
- Primitive Semiperfect Number (modified)
- Pseudoperfect Number (modified)
- Quartic Graph (modified)
- Quintic Graph (modified)
- Semiperfect Number (modified)
- Tutte's Fragment (modified)
- Tutte's Graph (modified)
- Unistable Polyhedron (modified)
- Unitransitive Graph (modified)
- van der Waerden Number (modified)
- Vertex Cover (modified)
- Visible Point (modified)
- Wada Basin (modified)
- Wang's Conjecture (modified)
- Weakly Regular Graph (modified)
- Weird Number (modified)
- Witch of Agnesi (modified)
Friday February 27, 2009
- Meissner Body
- Meissner Tetrahedra
- Meissner Tetrahedron
- Quartic Graph (modified)
- Quaternion (modified)
- Quintic Graph (modified)
- Rectilinear Crossing Number (modified)
- Reuleaux Tetrahedron (modified)
- Rhombohedron (modified)
- Riesel Number (modified)
- Road Coloring Problem
- Rotation Formula (modified)
- Roundoff Error (modified)
- Rubik's Cube (modified)
- Trapezohedron (modified)
- Trigonal Trapezohedron
Wednesday February 25, 2009
Tuesday February 24, 2009
- Coin Problem (modified)
- Monomial (modified)
- MonomialList
- Perfect Magic Cube (modified)
- Polynomial (modified)
- Polynomial Discriminant (modified)
- Primality Test (modified)
- Prime Arithmetic Progression (modified)
- Pythagorean Triangle (modified)
- Pythagorean Triple (modified)
Sunday February 22, 2009
- Hamming Graph (modified)
Tuesday February 17, 2009
- Almost Integer (modified)
- Eulerian Cycle (modified)
- Pi Approximations (modified)
Sunday February 15, 2009
- Higman-Sims Graph (modified)
Thursday February 12, 2009
- 57-Cell (modified)
- Integer Sequence Primes (modified)
- Palindromic Prime (modified)
- Paraboloid Geodesic (modified)
- Partition Function P (modified)
- Peg Solitaire (modified)
- Penrose Triangle (modified)
- Pentacontaheptachoron
- Pentagonal Square Triangular Number (modified)
- Pentagon Tiling (modified)
- Perfect Rectangle (modified)
- Perkel Graph (modified)
- Petersen Graph (modified)
Tuesday February 10, 2009
Monday February 9, 2009
- Spline (modified)
Sunday February 8, 2009
- Convergent Series (modified)
- Lefschetz Fixed Point Theorem (modified)
- Lefschetz Trace Formula (modified)
- N-Cluster (modified)
- Nearest Neighbor Problem (modified)
- Nested Polygon (modified)
- Noneulerian Graph (modified)
- Normal Equation (modified)
- Number Field (modified)
- Octic Graph (modified)
Saturday February 7, 2009
- Block Diagonal Matrix (modified)
- Hadwiger-Nelson Problem
- Kronecker Product (modified)
- Kronecker Sum (modified)
- Matrix Direct Product (modified)
- Matrix Exponential (modified)
- McGee Graph (modified)
- Miller's Primality Test (modified)
- Minkowski Sausage (modified)
- Moser Spindle (modified)
- Unit-Distance Graph (modified)
Friday February 6, 2009
- Brouwer Degree
- MacBeath Inconic (modified)
- Magic Circles (modified)
- Mandelbrot Set (modified)
- Map Degree (modified)
- Sea Horse Valley (modified)
Thursday February 5, 2009
- Convergent Series (modified)
Sunday February 1, 2009
- Andrews-Schur Identity (modified)
- Bernstein Basis
- Bernstein Polynomial (modified)
- Double Factorial (modified)
- Entire Function (modified)
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