covering


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covering

[′kəv·riŋ]
(mathematics)
For a set A, a collection of sets whose union contains A. Also known as cover.
References in classic literature ?
She held her hand interposed between the furnace-heat and her eyes, and seemed absorbed in her occupation; desisting from it only to chide the servant for covering her with sparks, or to push away a dog, now and then, that snoozled its nose overforwardly into her face.
I requested likewise, "that the secret of my having a false covering to my body, might be known to none but himself, at least as long as my present clothing should last; for as to what the sorrel nag, his valet, had observed, his honour might command him to conceal it.
It was so high above me, that I had some difficulty in reaching it, and catching my foot in the covering of the bed, I slipped, and fell right upon the young man, the knife going straight into his heart.
The evident alarm the savages betrayed filled me with forebodings of evil, and with an uncontrollable desire to penetrate the secret so jealously guarded Despite the efforts of Marheyo and Kory-Kory to restrain me, I forced my way into the midst of the circle, and just caught a glimpse of three human heads, which others of the party were hurriedly enveloping in the coverings from which they had been taken.
In the midst of them marched four men, one preceding the other at regular intervals of eight or ten feet, with poles of a corresponding length, extending from shoulder to shoulder, to which were lashed with thongs of bark three long narrow bundles, carefully wrapped in ample coverings of freshly plucked palm-leaves, tacked together with slivers of bamboo.
Every one knows that a large floor may have a covering of large figures, and that a small one must have a covering of small - yet this is not all the knowledge in the world.
The car, which was of a circular form and fifteen feet in diameter, was made of wicker-work, strengthened with a slight covering of iron, and protected below by a system of elastic springs, to deaden the shock of collision.
Surrounded by the screaming children the mummers, covering their faces and disguising their voices, bowed to their hostess and arranged themselves about the room.
She looked at me and then turned and glanced at my arm about her, and then she seemed quite suddenly to realize the scantiness of her apparel and drew away, covering her face with her palms and blushing furiously.
As soon as we approached near, they suddenly all turned round, and covering the path with their shawls, sung with great energy a wild song, beating time with their hands upon their legs.
Here "this" is a vague term, covering the memory-image and anything very like it, including its prototype.
With final imprecations, Sarkoja hastened away to Tal Hajus to report her discovery, and while she was gone my mother, wrapping me in the silks and furs of her night coverings, so that I was scarcely noticeable, descended to the streets and ran wildly away toward the outskirts of the city, in the direction which led to the far south, out toward the man whose protection she might not claim, but on whose face she wished to look once more before she died.