Abstract: A compound represented by the following general formula has excellent light emission characteristics. Ar1 represents a benzene ring, a naphthalene ring, a phenanthrene ring, etc.; D represents 5H-indolo[3,2,1-de]phenazin-5-yl group, etc.; A represents a cyano group, a phenyl group, a pyrimidyl group, a triazyl group, etc.; m is 1 or 2; n is 0 to 2; R1 to R4 each represent H, an aryl group, a cyano group, etc.

Abstract: A compound represented by the following general formula is an excellent light emitting material. R1 to R5 each represent a hydrogen atom, a deuterium atom, or a substituent other than a cyano group, but one or more of R1 to R5 is an aryl group or a pyridyl group, two or more of R1 to R5 are donor groups, and one or more of them are a substituted ring-fused indol-1-yl group (the number of rings constituting the fused ring is 4 or more).

Abstract: Provided is a method including: obtaining source code; extracting value assignment lines by parsing the source code; detecting first lines based on keywords among the value assignment lines; detecting second lines based on credential patterns among the value assignment lines; determining third lines from among the first lines, based on the number of lines that satisfy a certain condition among the first lines; and outputting vulnerabilities in the second and third lines.