Browsing Former Research Lines by Author "Tu, Z."

Now showing items 1-3 of 3

Counter-examples of regularity behavior for σ-evolution equations

Tu, Z.; Lu, X. (2011-12-31)

In this paper, we mainly discuss the infinite loss of regularity and μ-loss for a σ-evolution type model with oscillating in time coefficients. On the one hand, an explicit counter-example has been constructed in the ...
Counterexample of loss of regularity for fractional order evolution equations with both degenerating and oscillating coefficients

Lu, X.; Tu, Z.; Liu, X. (2014-12-31)

For weak evolution models of fractional order with singularity near the origin, the joint influence from the principal œÉ-Laplacian operator, degenerating part and oscillating part is of prime concern in the discussion of ...
On the exact controllability of hyperbolic magnetic Schrödinger equations

Lu, X.; Tu, Z.; Lv, X. (2014-12-31)

In this paper, we address the exact controllability problem for the hyperbolic magnetic Schr√∂dinger equation, which plays an important role in the research of electromagnetics. Typical techniques, such as Hamiltonian ...