Abstract
The word denumerable in the sequel means finite or countably infinite. Let M and N be two non-empty denumerable sets. A matrix is a function with domain the set of ordered pairs (m, n), where m ∈ M and n ∈ N,and with range a subset of the extended real number system—the reals with +∞ and −∞ adjoined. We call the sets M and N index sets. The matrix is called a finite matrix if both M and N are finite sets.
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© 1976 Springer-Verlag New York Inc.
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Kemeny, J.G., Snell, J.L., Knapp, A.W. (1976). Prerequisites From Analysis. In: Denumerable Markov Chains. Graduate Texts in Mathematics, vol 40. Springer, New York, NY. https://doi.org/10.1007/978-1-4684-9455-6_1
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DOI: https://doi.org/10.1007/978-1-4684-9455-6_1
Publisher Name: Springer, New York, NY
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