基金supported by Taishan University Starting Grant “Studies on Algebraic Sahlqvist Theory”the Taishan Young Scholars Program of the Government of Shandong Province,China (tsqn201909151)the Support Plan on Science and Technology for Youth Innovation of Uni-versities in Shandong Province (2021KJ086)。
基金supported by Taishan University Starting Grant “Studies on Algebraic Sahlqvist Theory”the Taishan Young Scholars Program of the Government of Shandong Province,China(No.tsqn201909151)