Brown, Kelsey M., authorGillespie, Maria, advisorKing, Emily, committee memberDavies, Ewan, committee member2024-12-232024-12-232024https://hdl.handle.net/10217/239772We establish an algorithm for the local computation of the "coswitching operation" on a pair of (skew) semistandard Young tableaux, (X,T), such that that T extends X and T is Littlewood-Richardson. In this context, coswitching refers to conjugation of usual tableau switching with Jeu de Taquin rectification. If X is Littlewood-Richardson in addition to T, this algorithm aligns with the "evacuation shuffling" operation defined by Gillespie and Levinson in relation to real Schubert curves. As a result, the algorithm we define has implications in real algebraic geometry.born digitalmasters thesesengCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.Text