Category:Open problems

• Lists of unsolved problems (9 P)
• Year of death unknown (1 C, 3,066 P)

C

• Undeciphered historical codes and ciphers (1 C, 12 P)
• Unsolved crimes (1 C, 3 P)

D

• Date of birth unknown (451 P)
• Date of death unknown (277 P)
• Unexplained disappearances (2 C, 9 P)

H

• Hypotheses (4 C, 45 P)

P

• Philosophical problems (29 P)
• Place of birth unknown (375 P)
• Place of death unknown (198 P)

S

• Year of song unknown (453 P)

U

• Unsolved problems in mathematics (3 C, 46 P)

Y

• Year of birth unknown (1 C, 11,776 P)
• Year of establishment unknown (1 C, 5 P)

• Open problem

*

• Lists of unsolved problems

A

• Almáttki áss

B

• Binding problem

C

• Controversies in autism

G

• Great Filter

H

• Hard problem of consciousness

P

• Philosophy of artificial intelligence
• Potential applications of carbon nanotubes
• Problem of mental causation
• Publius Enigma

Q

• Quantum computing

S

• Space colonization

T

• Terraforming