enumeration

  1. A

    T Sequences - Explicit Enumeration of $\epsilon_0$

    Introduction: Making a Sequence $T$ based on “The Rule of Three” The goal of this thread is to develop the basic model for what I refer to as a "$T$ sequence" and then expand on the basic model so as to create an enumeration of the ordinal $\epsilon_0$. Each $T$ sequence is a listing of...
  2. M

    Enumeration found answer but need quick help

    "Find the number of seven-digit positive integers such that the sum of the digits is 19". Wouldnt the answer to this question just be 18 choose 6 ????
  3. T

    enumeration of all perfect matching of a graph

    Hi all, Is there any algorithm for enumerating the perfect matchings of a graph? (edge-transitive) any software will be also useful.. thanks.