Last week Nick Higham, Edvin Deadman, and I ran a minisymposium on matrix functions at the SIAM Applied Linear Algebra 2015 conference (link). This post gives a brief summary of each talk, links to published work, and (once they appear) links to the slides with synchronised audio.

**Edit:** Links to the talks are now available.

Attendance at the sessions was very good, with some high-quality questions coming from the audience.

The symposium had two sessions.

**Session 1**

*Marcel Schweitzer*– Error Estimation in Krylov Subspace Methods for Matrix Functions*Michele Benzi*– Functions of Matrices with Kronecker Sum Structure*Bruno Iannazzo*– First-Order Riemannian Optimization Techniques for the Karcher Mean*Sivan Toledo*– A High Performance Algorithm for the Matrix Sign Function

**Session 2**

*Peter Kandolf*– The Leja Method: Backward Error Analysis and Implementation*Massimiliano Fasi*– An Algorithm for the Lambert W Function on Matrices*Antii Koskela*– An Exponential Integrator for Polynomially Perturbed Linear ODEs*Edvin Deadman*– Estimating the condition number of f(A)b

*Peter Kandolf describing the famour “hump” in the matrix exponential.*

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