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Metamath Proof Explorer

Theorem zssre

Description: The integers are a subset of the reals. (Contributed by NM, 2-Aug-2004)

Ref Expression
Assertion zssre ℤ ⊆ ℝ

Proof

Step Hyp Ref Expression
1 zre ⊢ ( 𝑥 ∈ ℤ → 𝑥 ∈ ℝ )
2 1 ssriv ⊢ ℤ ⊆ ℝ