Unverified50% confidenceFactExact time
The Crouzeix conjecture states: for any complex matrix A and any complex analytic function f on its numerical range, ‖f(A)‖ ≤ 2·sup{|f(z)| : z ∈ W(A)}, with the conjecture that the constant 2 is sharp.
1
Sources
50%
Confidence
Long-term
Relevance
8/30/2026
First Seen
Sources
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