SECR P class was created in 1909.
SECR J class was created in 1913.
Rhymney Railway P class was created in 1909.
SR Z class was created in 1929.
DSB Class ME was created in 1981.
Cutting Class was created in 1989.
SECR J class was created in 1913.
SECR C class was created in 1900.
SECR E class was created in 1906.
SECR D class was created in 1901.
SECR H class was created in 1904.
SECR L class was created in 1914.
DSB class P was created in 1907.
NER Class P was created in 1894.
Rhymney Railway P class was created in 1909.
Palestine Railways P class was created in 1935.
No, the 2SAT problem is not in the complexity class P.
The question of whether the complexity class P is equal to the complexity class NP is one of the most important unsolved problems in computer science. It is not known if P is equal to NP, and this question is at the heart of the famous P vs. NP problem.