Wiktionary
matching number
n. (context graph theory English) the number of edges in a maximum matching, often denoted as
Usage examples of "matching number".
Pete pressed the 7, and almost dropped the card when, silently and without any fuss, the matching number took the zero's place.
He went inside into the inner hallway and to the door that bore a matching number to the one on the bell.
That was bad enough, but the initial assault wave had been followed up by two full infantry divisions and at least twelve strategic bombardment regiments, with their long-range missile batteries, and a matching number of space-defense missile sites.
Chris fished out the keys he'd found and flipped through them, finding one with a matching number.