What do you call the upside down V character when it refers to a Jacobian Matrix or similar matrix?

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What do you call the upside down V character when it refers to a Jacobian Matrix? Not looking for the wedge operator... specifically, this is what it looks like:$$\Lambda$$

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1 Answer

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$\large\Lambda$ is the capital Greek letter Lambda.

To produce it, type \Lambda in MathJax.

Note that eigenvalues are often represented by the small Greek letter lambda $(\lambda)$.

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