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  2. Perron–Frobenius theorem - Wikipedia

    en.wikipedia.org/wiki/PerronFrobenius_theorem

    Let = be an positive matrix: > for ,.Then the following statements hold. There is a positive real number r, called the Perron root or the PerronFrobenius eigenvalue (also called the leading eigenvalue, principal eigenvalue or dominant eigenvalue), such that r is an eigenvalue of A and any other eigenvalue λ (possibly complex) in absolute value is strictly smaller than r, |λ| < r.

  3. Pushforward measure - Wikipedia

    en.wikipedia.org/wiki/Pushforward_measure

    In general, any measurable function can be pushed forward. The push-forward then becomes a linear operator, known as the transfer operator or FrobeniusPerron operator.In finite spaces this operator typically satisfies the requirements of the FrobeniusPerron theorem, and the maximal eigenvalue of the operator corresponds to the invariant measure.

  4. Talk:Perron–Frobenius theorem - Wikipedia

    en.wikipedia.org/wiki/Talk:PerronFrobenius...

    The technical details may be found in "A spectral theoretic proof of Perron-Frobenius", Mathematical Proceedings of the Royal Irish Academy, 102A (1), 29-35 (2002). I described the canonical form as "folklore" because although it's essential for the non-negative application I've never seen it properly attributed to anyone.

  5. Frobenius theorem - Wikipedia

    en.wikipedia.org/wiki/Frobenius_theorem

    Frobenius reciprocity theorem in group representation theory describing the reciprocity relation between restricted and induced representations on a subgroup PerronFrobenius theorem in matrix theory concerning the eigenvalues and eigenvectors of a matrix with positive real coefficients

  6. Transfer operator - Wikipedia

    en.wikipedia.org/wiki/Transfer_operator

    The left-adjoint of the PerronFrobenius operator is the Koopman operator or composition operator. The general setting is provided by the Borel functional calculus . As a general rule, the transfer operator can usually be interpreted as a (left-) shift operator acting on a shift space .

  7. Oregon man arrested for cold case murder of car salesman

    www.aol.com/oregon-man-arrested-cold-case...

    An Oregon man was arrested and charged Thursday for the murder of a car dealership owner who disappeared three years ago, police said Monday. Murphy Henry, 54, was also charged with abuse of a ...

  8. Did Queen Elizabeth I Have a Secret Affair with a Married Man ...

    www.aol.com/did-queen-elizabeth-secret-affair...

    Queen Elizabeth I’s reign was defined by power, strategy and an ironclad reputation — but one scandal threatened to shake the foundation of her carefully crafted image.

  9. Perron number - Wikipedia

    en.wikipedia.org/wiki/Perron_number

    Perron numbers are named after Oskar Perron; the PerronFrobenius theorem asserts that, for a real square matrix with positive algebraic entries whose largest eigenvalue is greater than one, this eigenvalue is a Perron number. As a closely related case, the Perron number of a graph is defined to be the spectral radius of its adjacency matrix.