Electronic Journal of Differential Equations, Vol. 2012 (2012), No. 114, pp. 1-10. Title: Solvability of (k,n-k) conjugate boundary-value problems at resonance Authors: Weihua Jiang (Hebei Univ., of Science and Technology, China) Jiqing Qiu (Hebei Univ., of Science and Technology, China) Abstract: Using the coincidence degree theory due to Mawhin and constructing suitable operators, we prove the existence of solutions for (k,n-k) conjugate boundary-value problems at resonance. Submitted May 01, 2012. Published July 05, 2012. Math Subject Classifications: 35B34, 34B10, 34B15. Key Words: Resonance; Fredholm operator; boundary-value problem.