Search results
Results from the WOW.Com Content Network
Trace (linear algebra) In linear algebra, the trace of a square matrix A, denoted tr (A), [1] is defined to be the sum of elements on the main diagonal (from the upper left to the lower right) of A. The trace is only defined for a square matrix ( n × n ). It can be proven that the trace of a matrix is the sum of its eigenvalues (counted with ...
A trace element is a chemical element of a minute quantity, a trace amount, especially used in referring to a micronutrient, [1] [2] but is also used to refer to minor elements in the composition of a rock, or other chemical substance . In nutrition, trace elements are classified into two groups: essential trace elements, and non-essential ...
Software tracing. Software tracing is a tool for developers to gather information for debugging. This information is used both during development cycles and post-release. Unlike event logging, software tracing usually does not have the concept of a "class" of event or an "event code". Other reasons why event-logging solutions based on event ...
Trace. A trace of snowfall. In meteorology, a trace denotes an amount of precipitation, such as rain or snow, that is greater than zero, but is too small to be measured by standard units or methods of measurement. The designation of a trace rather than zero is used to indicate that precipitation did fall, but not enough to be measured reliably.
Trace gases are gases that are present in small amounts within an environment such as a planet 's atmosphere. Trace gases in Earth's atmosphere are gases other than nitrogen (78.1%), oxygen (20.9%), and argon (0.934%) which, in combination, make up 99.934% of its atmosphere (not including water vapor).
Because the meaning of a sign is generated from the difference it has from other signs, especially the other half of its binary pairs, the sign itself contains a trace of what it does not mean, i.e. bringing up the concepts of woman, normality, or speech may simultaneously evoke the concepts of man, abnormality, or writing. Derrida does not ...
Track and trace. In the distribution and logistics of many types of products, track and trace or tracking and tracing concerns a process of determining the current and past locations (and other information) of a unique item or property. Mass serialization is the process that manufacturers go through to assign and mark each of their products ...
Trace evidence. Trace evidence occurs when objects make contact, and material is transferred. This type of evidence is usually not visible to the naked eye and requires specific tools and techniques to be located and obtained. [1] Due to this, trace evidence is often overlooked, and investigators must be trained to detect it. [1]