closed disk


Also found in: Wikipedia.

closed disk

[¦klōzd ′disk]
(mathematics)
A circle and its interior. Also known as disk.
Mentioned in ?
References in periodicals archive ?
Tenders are invited for Mannually Operated Butterfly Valve , Size :300 Nb, Class#150 As Per Technical Specification Enclosed Product Features:- According To Awwa Class 150b, Automatic Soft Sealing System, Disk With Closed Disk Eyes And Double Offset, Flange To Flange- 203 Mm, Flange Od- 483 Mm, Pcd- 432 Mm, No Of Holes- 12 , Medium- Water, Temp- 50"C Material:- Body & Disk - Ductile Cast Iron Astm A536 Gr65-45-12 (En-Js 1050 (Ggg-50), Shaft:- Stainless Steel Aisi 304, Bearing Bushes:- Bronze, Body Seat -Nickel Weld Overlay, Microfinished, Profile Sealing Ring- Ss Aisi 304, O-Ring- Epdm Corrossion Protection:- Epoxy Coated (Thickness- Min.
2] is a closed disk of radius R centred at the origin O, whereas {[Z.
A strong embedding (also called a closed 2-cell embedding) of a graph in some surface is an embedding of the graph such that every face is homeomorphic to a closed disk.