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Lukas Bulwahn
Entries
| 2017 |
| December 22: The Falling Factorial of a Sum |
| July 31: Stewart's Theorem and Apollonius' Theorem |
| January 24: Bernoulli Numbers |
| 2016 |
| December 29: The Twelvefold Way |
| October 11: Intersecting Chords Theorem |
| August 7: Ptolemy's Theorem |
| June 26: Cardinality of Multisets |
| May 24: Cardinality of Equivalence Relations |
| May 4: Spivey's Generalized Recurrence for Bell Numbers |
| January 14: Cardinality of Number Partitions |
| 2015 |
| December 12: Cardinality of Set Partitions |
| November 19: Euler's Partition Theorem |
| June 27: Derangements Formula |