SYR
Details and Options
- To use SYR, you first need to load the BLAS Package using Needs ["LinearAlgebra`BLAS`"].
- The following arguments must be given:
-
ul input string upper/lower triangular stringα input expression scalar mutliplex input expression vectora input/output symbol matrix; the symbol value is modified in place
- The upper/lower triangular string ul may be specified as:
-
"U" update the upper triangular part of a"L" update the lower triangular part of a
- Dimensions of the matrix and vector arguments must be such that the dot product and addition are well defined.
Examples
open all close allBasic Examples (1)
Load the BLAS package:
Apply a symmetric rank-one update to the upper triangular part of a matrix:
Scope (4)
Real matrix and vectors:
Complex matrix and vectors:
Arbitrary-precision matrix and vectors:
Integer-symbolic matrix and vectors:
Properties & Relations (1)
Possible Issues (2)
The last argument must be a symbol:
The last argument must be initialized to a matrix:
Related Guides
Text
Wolfram Research (2017), SYR, Wolfram Language function, https://reference.wolfram.com/language/LowLevelLinearAlgebra/ref/SYR.html.
CMS
Wolfram Language. 2017. "SYR." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/LowLevelLinearAlgebra/ref/SYR.html.
APA
Wolfram Language. (2017). SYR. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/LowLevelLinearAlgebra/ref/SYR.html
BibTeX
@misc{reference.wolfram_2025_syr, author="Wolfram Research", title="{SYR}", year="2017", howpublished="\url{https://reference.wolfram.com/language/LowLevelLinearAlgebra/ref/SYR.html}", note=[Accessed: 16-November-2025]}
BibLaTeX
@online{reference.wolfram_2025_syr, organization={Wolfram Research}, title={SYR}, year={2017}, url={https://reference.wolfram.com/language/LowLevelLinearAlgebra/ref/SYR.html}, note=[Accessed: 16-November-2025]}