[76] A Study of the Approximation of e

[77] Study on High-dimensional Extension of Pick’s Theorem

[78] Estimate of the electric potential outside a bounded charged conductor

[79] The Rationality of the Vertices of a Regular Simplex or Semiregular Simplex in R^n or L^p-space over R^2

[80] Investigation on a class of infinite number sequences which satisfy benford's law