摘要
In 1880, Appell introduced four types of double series F1, F2, F3, F4 as an extension of the Gauss hypergeometric series 2F1 to two variables. These four series, called Appell series, are a fundamental class of hypergeometric functions in two variables. They play an essential role in various branches of physics, particularly in mathematical physics, quantum mechanics, and general relativity. In this paper, we present several new supercongruences related to the truncated Appell series F3. These results include two extensions of a previously established supercongruence by Lin and Liu, as well as a conjecture proposed by Wang and Yu.