Christmas Fern – Polystichum acrostichoides

by | Dec 9, 2023 | Ferns, NE Native Ferns

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For scattering matrix in physics, see S-matrix.

In linear algebra, a completely-S matrix is a square matrix such that for every principal submatrix R there exists a positive vector u such that Ru > 0.[1]

Notes

  1. ^ Chen, Hong (1996). "A sufficient condition for the positive recurrence of a semimartingale reflecting Brownian motion in an orthant". Annals of Applied Probability. 6 (3): 758–765. doi:10.1214/aoap/1034968226.


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