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2. List of micronutrients - Wikipedia

   en.wikipedia.org/wiki/List_of_micronutrients

   1.1 Trace elements. 2 Vitamins. 3 See also. 4 References. ... Download as PDF; Printable version; In other projects ... [1] [2] The following is a list of ...

3. Trace (linear algebra) - Wikipedia

   en.wikipedia.org/wiki/Trace_(linear_algebra)

   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). In mathematical physics texts, if tr (A) = 0 then the matrix is said to be traceless.

4. Trace element - Wikipedia

   en.wikipedia.org/wiki/Trace_element

   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 trace ...

5. TRACE (psycholinguistics) - Wikipedia

   en.wikipedia.org/wiki/TRACE_(psycholinguistics)

   TRACE (psycholinguistics) TRACE is a connectionist model of speech perception, proposed by James McClelland and Jeffrey Elman in 1986. [1] It is based on a structure called "the TRACE," a dynamic processing structure made up of a network of units, which performs as the system's working memory as well as the perceptual processing mechanism. [2 ...

6. Dualizing sheaf - Wikipedia

   en.wikipedia.org/wiki/Dualizing_sheaf

   Dualizing sheaf. In algebraic geometry, the dualizing sheaf on a proper scheme X of dimension n over a field k is a coherent sheaf together with a linear functional. that induces a natural isomorphism of vector spaces. for each coherent sheaf F on X (the superscript * refers to a dual vector space). [1] The linear functional is called a trace ...

7. Tracing paper - Wikipedia

   en.wikipedia.org/wiki/Tracing_paper

   Tracing paper is paper made to have low opacity, allowing light to pass through. Its origins date back to at least the 1300s where it was used by artists of the Italian Renaissance. [1] In the 1880s, tracing paper was produced en masse, used by architects, design engineers, and artists. [2] Tracing paper was key in creating drawings that could ...