Search results
Results from the WOW.Com Content Network
For example: "All humans are mortal, and Socrates is a human. ∴ Socrates is mortal." ∵ Abbreviation of "because" or "since". Placed between two assertions, it means that the first one is implied by the second one. For example: "11 is prime ∵ it has no positive integer factors other than itself and one." ∋ 1. Abbreviation of "such that".
In the context of proofs, this phrase is often seen in induction arguments when passing from the base case to the induction step, and similarly, in the definition of sequences whose first few terms are exhibited as examples of the formula giving every term of the sequence. necessary and sufficient
Siegfried "Zig" Engelmann (November 26, 1931 – February 15, 2019) [1] was an American educationalist who co-developed the approach to instruction termed "Direct Instruction" (DI). Engelmann was Professor Emeritus of Education at the University of Oregon and Director of the National Institute for Direct Instruction. [ 2 ]
Direct instruction (DI) is the explicit teaching of a skill set using lectures or demonstrations of the material to students. A particular subset, denoted by capitalization as Direct Instruction , refers to the approach developed by Siegfried Engelmann and Wesley C. Becker that was first implemented in the 1960s.
The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics. Additionally, the subsequent columns contains an informal explanation, a short example, the Unicode location, the name for use in HTML documents, [1] and the LaTeX symbol.
A fictional logo using the service mark symbol. A service mark or servicemark is a trademark used in the United States and several other countries to identify a service rather than a product. [1] When a service mark is federally registered, the standard registration symbol ® or "Reg U.S. Pat & TM Off" may be
The multiplication sign (×), also known as the times sign or the dimension sign, is a mathematical symbol used to denote the operation of multiplication, which results in a product. [1] The symbol is also used in botany, in botanical hybrid names. The form is properly a four-fold rotationally symmetric saltire. [2]
Mathematical notation is widely used in mathematics, science, and engineering for representing complex concepts and properties in a concise, unambiguous, and accurate way. For example, the physicist Albert Einstein's formula = is the quantitative representation in mathematical notation of mass–energy equivalence. [1]