Porous Set
In mathematics, a porosity is a concept in the study of metric spaces. Like the concepts of meagre and measure zero sets, porosity is a notion of a set being somehow "sparse" or "lacking bulk"; however, porosity is not equivalent to either of the above notions, as shown below.
Read more about Porous Set: Definition, Properties
Famous quotes containing the words porous and/or set:
“Does art reflect life? In movies, yes. Because more than any other art form, films have been a mirror held up to society’s porous face.”
—Marjorie Rosen (b. 1942)
“The dreariest spot in all the land
To Death they set apart;
With scanty grace from Nature’s hand,
And none from that of Art.”
—John Greenleaf Whittier (1807–1892)