Κυριακή 15 Δεκεμβρίου 2024

Douglas Hofstadter, FOREWORD

Douglas Hofstadter, FOREWORD
In: Clark Kimberling, Triangle Centers and Central Triangles. Congressus Numerantum, vol. 129, August, 1998. Winnipeg, Canada

Douglas Hofstadter

-

Δεν υπάρχουν σχόλια:

Δημοσίευση σχολίου

Εγγραφή σε: Σχόλια ανάρτησης (Atom)

ETC

X(72981) = X(2)X(1074)∩X(3)X(10) Barycentrics    (a^2-b^2-c^2)*(2*a^5-a^4*b-2*a^3*b^2+2*a^2*b^3-b^5-a^4*c+4*a^3*b*c-2*a^2*b^2*c-b^4*c-2*a^3...

  • EUCLID 4404
  • HOMOTHETIC TRIANGLES and EULER LINES
    Theorem 1. Let ABC be an equilateral triangle and P a point. The Euler lines of the triangles PBC,PCA,PAB are concurent.Denote the point ...
  • ANOPOLIS CIRCLE
    Let ABC be a triangle. Denote: (N1),(N2), (N3) = the NPCs of IBC, ICA, IAB, resp. (12), (13) = the reflections of (N1) in BI, CI, resp. ...