Bogdan Raictua

collaborators

5 papers

cs.LG2026

Fast Reconstruction of Exact Maxwell Dynamics from Sparse Data

Dan DeGenaro, Xin Li, Obed Amo +4

We introduce FLASH-MAX, a shallow, exact-by-construction neural network architecture for predicting homogeneous electromagnetic fields from sparse pointwise observations. Each hidd…

math.AP2026

Partial regularity for $A$ -quasiconvex variational problems of linear growth

Christopher Irving, Zhuolin Li, Bogdan RaiÅ£Ä

We prove that minimizers of variational integrals $E (v) = \int_{I^} c ◯ f (v) for v \in M (I^c ◯) such that A v = 0,$ are partially continuous prov…

math.AP2026

Partial regularity and higher integrability for A-quasiconvex variational problems

Zhuolin Li, Bogdan RaiÅ£Ä

We prove that minimizers of variational problems on open sets $I^c ◯ \subset R^{n}$ $$ \mbox{minimize}\quad \mathcal E(v)=\int_Î©f(v(x))\mathrm{d} x\quad\text{for } \mathscr{A}…

math.FA2026

Comparison of polynomial matrix differential operators

Eduard CurcÄ, Bogdan RaiÅ£Ä

We characterize matrix polynomials $P, Q$ such that the inequality $$ \left\Vert Q(D)u\right\Vert _{L^{2}}\leq C\left\Vert P(D)u\right\Vert _{L^{2}}\quad\text{for all }u\in C_c^\inf…

math.AP2025

Quasiconvexity and self-improving size estimates

Bogdan RaiÅ£Ä

We show that MÃ¼ller's $L lo g L$ bound $F (D u) \geq 0, D u \in L_{loc}^{p} (R^{n}) ⟹ F (D u) \in L lo g L_{loc} (R^{n})$ for $F = det$ and $p = n$ holds…