Findings:
- Phi Kappa Sigma
- Sigma Kappa
- Sigma Phi Epsilon
- Phi Delta Sigma
- Phi Beta Kappa
- Phi Theta Kappa
- Phi Kappa Theta
- Kappa Sigma
- Sigma Chi
- Sigma field
- Sigma (user)
- Sigma Draconis
- σ algebra
- sigma function
- Tau Beta Sigma
- Korg Sigma
- Six Sigma
- sigma notation
- Sigma Mu Beta
- Sigma Designs
- Plateau Sigma
- Sigma Xi
- Sigma Alpha Epsilon
- sigma finite
- electro phi beta
- Sigma EM8500
- Sigma Alpha Mu
- sigma factor
- Sigma Star Saga
- sigma sigma sigma
- sigma algebra
- Alpha Chi Sigma
- sigma curve
- sigma male
- 7th Sigma
- Kappa
- Tau Kappa Epsilon
- Kappa Kappa Kappa
- kappa mo kawa nagare
- Kappa Kappa Psi
- Delta Kappa Epsilon
- kappa maki
- Kappas
- Eta Kappa Nu
- kappa (user)
- Kappa Kappa Gamma
- Alpha Phi Omega
- phi
- Sigma Nu
- Euler Phi function
- proof of the properties of the Euler Phi function
- phi phenomenon
- Phi Gamma Delta
- φ
- Alpha Phi
- Koh Phi Phi
- The Real Psi Phi (user)
- phi (user)
- sigma
- Σ
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