∈ means ‘(is) an element of‘ For instance, ‘Let a∈A’ means ‘Let a be an element of A’ What does an alpha woman mean?Īn alpha female is a powerful and successful woman, often in a leadership role. 3 : cumulative action or effect especially : the process by which a sequence of stimuli that are individually inadequate to produce a response are cumulatively able to induce a nerve impulse. The symbol is a special “U” like this: ∪ What does summation mean in English?ġ : the act or process of forming a sum : addition. So the union of sets A and B is the set of elements in A, or B, or both. More … The set made by combining the elements of two sets. It also must only be used in the regions in which you possess a valid trademark registration. It must only be used in the case of registered trademarks and by the owner or licensee. The R symbol indicates that this word, phrase or logo is a registered trademark for the product or service. … Slashed zero is an alternate glyph for the zero character. The letter “Ø” is sometimes used in mathematics as a replacement for the symbol “∅” (Unicode character U+2205), referring to the empty set as established by Bourbaki, and sometimes in linguistics as a replacement for same symbol used to represent a zero.
Individually the stimuli cannot evoke a response, but collectively they can generate a response. Summation, in physiology, the additive effect of several electrical impulses on a neuromuscular junction, the junction between a nerve cell and a muscle cell. The variable of summation is represented by an index which is placed beneath the summation sign. A typical element of the sequence which is being summed appears to the right of the summation sign.
The summation sign, S, instructs us to sum the elements of a sequence. There are two types of summation: spatial summation and temporal summation that occur between neurones.
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