Skip to primary content
Skip to secondary content

Main menu

  • Home
  • About
  • Annals of the Institute of STEM
  • Combinatorics
  • Disclaimer
  • From Differential Geometry to Topology Summer School 2026
  • Geometry
  • Hopf, and Linear Algebra of Triangles and Quadrilaterals, Summer Schools 2024
  • Online Encyclopaedia of Applied Graph and Order Theory
  • Online Encyclopaedia of Tensors and other Multi-linear Arrays
  • Topology
  • Two infinite families of generalizations of Stewart’s Theorem

Monthly Archives: November 2025

Riddle 16

Posted on November 13, 2025 by insttheorystem
Riddle-16Download
Posted in Uncategorized

Riddle 15+

Posted on November 13, 2025 by insttheorystem
Riddle-15Download

Give a conceptual description of how I am related to Riddle 5’s graph. What is my edge-chromatic number? And what is my crossing number?

Posted in Uncategorized

Riddle 14

Posted on November 13, 2025 by insttheorystem
Riddle-14Download
Posted in Uncategorized

Riddle 13

Posted on November 13, 2025 by insttheorystem
Riddle-13Download
Posted in Uncategorized

Riddle 12

Posted on November 13, 2025 by insttheorystem

Show that the traditional design for a soccer ball is Hamiltonian.

Posted in Uncategorized

Riddle 11-

Posted on November 13, 2025 by insttheorystem

Construct a dodecahedron from more straightforwardly constructible regular polygons, as follows.

From a tessellation with multiple types of regular polygon tiles.

Posted in Uncategorized

Archives

  • November 2025
  • May 2025
  • April 2025
  • April 2024
  • March 2024

Meta

  • Create account
  • Log in
Create a website or blog at WordPress.com
  • Subscribe Subscribed
    • institute-theory-stem.org
    • Already have a WordPress.com account? Log in now.
    • institute-theory-stem.org
    • Subscribe Subscribed
    • Sign up
    • Log in
    • Report this content
    • View site in Reader
    • Manage subscriptions
    • Collapse this bar