Φ Cas

Phi Cassiopeiae (φ Cas, φ Cassiopeiae) is a multiple star in the constellation Cassiopeia with a combined apparent magnitude of +4.95. The two brightest

Cas α Cas β Cas γ Cas δ Cas ε Cas ζ Cas η Cas θ Cas ι Cas κ Cas λ Cas μ Cas ν Cas ξ Cas ο Cas π Cas ρ Cas σ Cas τ Cas υ1 Cas υ2 Cas φ Cas χ Cas ψ Cas

23 Cas η Cas ν Cas υ1 Cas γ Cas υ2 Cas μ Cas 31 Cas 32 Cas θ Cas φ Cas 35 Cas ψ Cas δ Cas 38 Cas χ Cas 40 Cas 42 Cas 43 Cas 44 Cas ε Cas ω Cas 47 Cas 48

ν Cas 閣道五 Gédàowu 5th star ο Cas 閣道六 Gédàoliù 6th star π Cas 閣道增一 Gédàozēngyī 1st additional star ξ Cas 閣道增二 Gédàozēngèr 2nd additional star φ Cas 閣道增三

that ka ≡ kb (mod m). However, the following is true: If c ≡ d (mod φ(m)), where φ is Euler's totient function, then ac ≡ ad (mod m)—provided that a is