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MATHEMATICS The equation 
, where f (x ) is a known function and u(z ) is the function to be determined; when a = 1/2, this equation has application to Abel's problem.
, where f (x ) is a known function and u(z ) is the function to be determined; when a = 1/2, this equation has application to Abel's problem.- rarefied gas
- rare gas
- rare metal
- RAREP
- Rarita-Schwinger equation
- raschel knitting
- Raschig process
- Raschig ring
- rash
- Ra-Shalom
- rashing
- RA size
- rasorial
- rasorite
- sextant altitude corrections
- sextant error
- sextic
- sextile aspect
- sextillion
- sexual cycle
- sexual dimorphism
- sexuality
- sexually transmitted disease
- sexual reproduction
- sexual selection