TY - JOUR ID - Rzepnicki2025 LB - Rzepnicki2025 AU - Rzepnicki, Ɓukasz TI - Integral representation of solutions to Dirac systems ST - Integral representation of solutions to Dirac systems JO - Opuscula Math. JA - Opuscula Math. JF - Opuscula Mathematica PY - 2025 VL - 45 IS - 3 SP - 403 EP - 416 DO - https://doi.org/10.7494/OpMath.2025.45.3.403 UR - https://doi.org/10.7494/OpMath.2025.45.3.403 AB - We introduce a novel integral form for a fundamental set of solutions to one-dimensional Dirac systems with an integrable potential and spectral parameter \(\mu \in \mathbb{C}\). This method enables the construction of solutions that are analytic in \(\mu\) within the half-plane \(\operatorname{Im} \mu\gt -r\), \(r\geq 0\) and \(|\mu| \to \infty\). Consequently, we derive estimates for the solutions that remain valid not just within a horizontal strip but throughout the entire half-plane. KW - Dirac system KW - integrable potential KW - integral equations KW - fundamental system of solutions SN - 1232-9274 ER -