Equivalence

In telling the time, we commonly refer to hours that differ by a multiple of 12 using the same number. Sixty hours after 3 o'clock it is again 3 o'clock. The clock relationship -- with its times that are named by the same number but are not, after all, exactly the same -- illustrates the mathematical notion of an "equivalence relation." In "Equivalencies," the insights of poet Judith McCombs stretch this mathematical concept.

Equivalencies     by Judith McCombs

The fear of not writing, of having no words,

Is the muscles not working, the pack top-heavy,
the hard slime on ledges where the ankle gives way

In the same family -- a poet and a mathematician

When a poet and a mathematician are members of the same family, understandings result.  Ohio poet Cathryn Essinger is a twin of a mathematician and writes about this relationship.  Here are opening stanzas of two of her poems.