Search results
Results from the Health.Zone Content Network
v. t. e. A diagram showing a Wi-Fi network. A hotspot is a physical location where people can obtain Internet access, typically using Wi-Fi technology, via a wireless local-area network (WLAN) using a router connected to an Internet service provider . Public hotspots may be created by a business for use by customers, such as coffee shops or hotels.
Ramanujan's sum. In number theory, Ramanujan's sum, usually denoted cq ( n ), is a function of two positive integer variables q and n defined by the formula. where ( a, q) = 1 means that a only takes on values coprime to q . Srinivasa Ramanujan mentioned the sums in a 1918 paper. [1]
Dim sum ( traditional Chinese : 點心; simplified Chinese : 点心; pinyin : diǎn xīn; Jyutping : dim2 sam1) is a large range of small Chinese dishes that are traditionally enjoyed in restaurants for brunch. [1] [2] Most modern dim sum dishes are commonly associated with Cantonese cuisine, although dim sum dishes also exist in other Chinese ...
This template performs addition. For example, if you want to add 2 and 3, use this: {{Sum|2|3}}, which creates 5. It handles positive and negative integers, fractions, and decimals to thirteen decimal points:
Sum rule in quantum mechanics. In quantum mechanics, a sum rule is a formula for transitions between energy levels, in which the sum of the transition strengths is expressed in a simple form. Sum rules are used to describe the properties of many physical systems, including solids, atoms, atomic nuclei, and nuclear constituents such as protons ...
Probability theory. In probability theory and statistics, a normal distribution or Gaussian distribution is a type of continuous probability distribution for a real-valued random variable. The general form of its probability density function is. The parameter is the mean or expectation of the distribution (and also its median and mode ), while ...
Empty sum. In mathematics, an empty sum, or nullary sum, [1] is a summation where the number of terms is zero. The natural way to extend non-empty sums [2] is to let the empty sum be the additive identity . Let , , , ... be a sequence of numbers, and let. be the sum of the first m terms of the sequence. This satisfies the recurrence.
In mathematics, the Lie product formula, named for Sophus Lie (1875), but also widely called the Trotter product formula, [1] named after Hale Trotter, states that for arbitrary m × m real or complex matrices A and B, [2] where eA denotes the matrix exponential of A. The Lie–Trotter product formula [3] and the Trotter–Kato theorem [4 ...