Tatsuro Ito

activity

20032008

P

-and

Q

-polynomial association schemes

40 citations · 116 across the 12 of their papers we have counts for

collaborators

Showing 2008Show all

4 papers · 1 filter

math.RA2008★ 5 cited

Mock Tridiagonal Systems

Tatsuro Ito, Paul Terwilliger

We introduce the notion of a {\it mock tridiagonal system}. This is a generalization of a tridiagonal system in which the irreducibility assumption is replaced by a certain non-van…

math.RA2008★ 10 cited

How to sharpen a tridiagonal pair

Tatsuro Ito, Paul Terwilliger

Let $\F$ denote a field and let $V$ denote a vector space over $\F$ with finite positive dimension. We consider a pair of linear transformations $A : V \to V$ and $A^{*} : V \to V$ that…

math.QA2008★ 5 cited

Tridiagonal pairs of $q$ -Racah type

Tatsuro Ito, Paul Terwilliger

Let $K$ denote an algebraically closed field and let $V$ denote a vector space over $K$ with finite positive dimension. We consider a pair of linear transformations $A : V \to V$ and…

math.RA2008★ 19 cited

The Drinfel'd polynomial of a tridiagonal pair

Tatsuro Ito, Paul Terwilliger

Let $K$ denote a field and let $V$ denote a vector space over $K$ with finite positive dimension. We consider a pair of linear transformations $A : V \to V$ and $A^{*} : V \to V$ that sa…

Mock Tridiagonal Systems

How to sharpen a tridiagonal pair

Tridiagonal pairs of q-Racah type

The Drinfel'd polynomial of a tridiagonal pair

Tridiagonal pairs of $q$ -Racah type