subtraction
111Parity (mathematics) — In mathematics, the parity of an object states whether it is even or odd. This concept begins with integers. An even number is an integer that is evenly divisible by 2, i.e., divisible by 2 without remainder; an odd number is an integer that is… …
112Combinatorial species — In combinatorial mathematics, the theory of combinatorial species is an abstract, systematic method for analysing discrete structures in terms of generating functions. Examples of discrete structures are (finite) graphs, permutations, trees, and… …
113Number system — This article is about different sets of numbers. For different methods of expressing numbers with symbols, see numeral system. In mathematics, a number system is a set of numbers, (in the broadest sense of the word), together with one or more… …
114Wilkinson Microwave Anisotropy Probe — WMAP redirects here. WMAP may also refer to either radio station WXNC or WGSP FM. Wilkinson Microwave Anisotropy Probe General information NSSDC ID 2001 027A …
115Arithmetic logic unit — schematic symbol Cascadable 8 …
116Renormalization — Quantum field theory (Feynman diagram) …
117Curta calculator — Curta (Type I) mechanical calculator shown in the operational position (left hand). The crank is turned with the right hand. The Curta is a small, hand cranked mechanical calculator introduced in 1948. It has an extremely compact design: a small… …
118Angiogram — Angiography or arteriography is a medical imaging technique in which an X ray image is taken to visualize the inside, or lumen, of blood vessels and organs of the body, with particular interest in the arteries, veins and the heart chambers. Its… …
119Photographic filter — Four photographic filters. Clockwise, from top left, an infrared hot mirror filter, a polarising filter, and a UV filter. The larger filter is a polariser for Cokin style filter mounts. In photography and videography, a filter is a camera… …
120Manchester Small-Scale Experimental Machine — Replica of the Small Scale Experimental Machine (SSEM) at the Museum of Science and Industry in Castlefield, Manchester …
