c⃝ 2019 The Mathematical Society of Japan J. Math. Soc. Japan Vol. 71, No. 4 (2019) pp. 1173–1179 doi: 10.2969/jmsj/80668066 A proof of Saitoh's conjecture for conjugate Hardy H2 kernels By Qi’an Guan (Received May 31, 2018) Abstract. In this article, we obtain a strict inequality between the conjugate Hardy H2 kernels and the Bergman kernels on planar regular regions with n > 1 boundary components, which is a conjecture of Saitoh.