cybcat
01Database2F1 HPDB searchHypergeometric 2F1 Hadamard product database↗ 02MathHodge type (1,1,1,1)Special points in families of motives↗ 03MathFiber productModular threefolds and elliptic-curve families↗ 04SearchRIESExpression search for real and integer numbers↗ 05GamePuzzledayA puzzle for each day↗ 06GameGoodluck poolA pool simulator with additional luck↗ 07GameMinesweeperThe familiar game, played by AI↗ 08AtlasEC atlasAn interactive elliptic-curve star map↗ 09Notescybcat on BananaspaceProfile and notes elsewhere on the web↗ 10DatabaseLattice polygons databaseConvex polygons up to unimodular equivalence↗ 11GameGardner MiniChessChess in a 5 × 5 world↗ 12GameMini Othello ChessA six-by-six Othello chess game↗ 13ExperimentDouble PendulumA small study of chaotic motion↗ 14NotesMath 263xComputational number theory & algebraic geometry notes↗ 15Map大湾区轨道地图Greater Bay Area rail network map · beta↗ 16LanguageFrenchcardsThree thousand French vocabulary cards↗ 17GameMathRNGdleA random-number guessing game↗ 18MathS-unitAn explorer of S-unit linear equations↗ 19LabPolyomino LabTessellations and tiling experiments↗ 20GamePyramidAn IQPyramid solver with stored solutions↗ 21ToolGeomToolA tool for plane geometry. ↗ 22GameMahjongA simple Mahjong game human vs AI. ↗

random newform

—
…

random polyhedra

— —
—
—