open interval

Scientific  

1. A set of numbers consisting of all the numbers between a pair of given numbers but not including the endpoints.

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Example Sentences

An example would be the set of all open intervals, which covers the real number line. 

From Scientific American

Starting from a state of haunted near-silence, he evokes a bit of the music of Shakespeare’s era with plaintive open intervals in the winds and darkly winding counterpoint in the low strings, utterly without kitsch.

From The New Yorker

A minimalist by nature, McWhorter said the final product would feature power chords, open intervals, a pulsing to magnify the clapping.

From New York Times

It would be similarly unreasonable to call battlements or machicolations architectural features, so long as they consist only of an advanced gallery supported on projecting masses, with open intervals beneath for offence.

From Project Gutenberg

There was no window, abundance of air and light entering through the fissures of the rough logs, which had open intervals between them; and the only artificial aperture was the door.

From Project Gutenberg