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Mathlib.Data.Real.ENatENNReal

Coercion from ℕ∞ to ℝ≥0∞ #

In this file we define a coercion from ℕ∞ to ℝ≥0∞ and prove some basic lemmas about this map.

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def ENat.toENNReal :
ℕ∞ → ENNReal

Coercion from ℕ∞ to ℝ≥0∞.

Instances For
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    instance ENat.hasCoeENNReal :
    CoeTC ℕ∞ ENNReal
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    @[simp]
    theorem ENat.map_coe_nnreal :
    WithTop.map Nat.cast = ENat.toENNReal
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    @[simp]
    theorem ENat.toENNRealOrderEmbedding_apply :
    ↑ENat.toENNRealOrderEmbedding = ENat.toENNReal
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    def ENat.toENNRealOrderEmbedding :
    ℕ∞ ↪o ENNReal

    Coercion ℕ∞ → ℝ≥0∞ as an OrderEmbedding.

    Instances For
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      @[simp]
      theorem ENat.toENNRealRingHom_apply :
      ↑ENat.toENNRealRingHom = ENat.toENNReal
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      def ENat.toENNRealRingHom :
      ℕ∞ →+* ENNReal

      Coercion ℕ∞ → ℝ≥0∞ as a ring homomorphism.

      Instances For
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        @[simp]
        theorem ENat.toENNReal_top :
        ↑⊤ = ⊤
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        @[simp]
        theorem ENat.toENNReal_coe (n : ℕ) :
        ↑↑n = ↑n
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        @[simp]
        theorem ENat.toENNReal_ofNat (n : ℕ) [Nat.AtLeastTwo n] :
        ↑(OfNat.ofNat n) = OfNat.ofNat n
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        @[simp]
        theorem ENat.toENNReal_le {m : ℕ∞} {n : ℕ∞} :
        ↑m ≤ ↑n ↔ m ≤ n
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        @[simp]
        theorem ENat.toENNReal_lt {m : ℕ∞} {n : ℕ∞} :
        ↑m < ↑n ↔ m < n
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        theorem ENat.toENNReal_mono :
        Monotone ENat.toENNReal
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        theorem ENat.toENNReal_strictMono :
        StrictMono ENat.toENNReal
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        @[simp]
        theorem ENat.toENNReal_zero :
        ↑0 = 0
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        @[simp]
        theorem ENat.toENNReal_add (m : ℕ∞) (n : ℕ∞) :
        ↑(m + n) = ↑m + ↑n
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        @[simp]
        theorem ENat.toENNReal_one :
        ↑1 = 1
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        @[simp]
        theorem ENat.toENNReal_mul (m : ℕ∞) (n : ℕ∞) :
        ↑(m * n) = ↑m * ↑n
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        @[simp]
        theorem ENat.toENNReal_min (m : ℕ∞) (n : ℕ∞) :
        ↑(min m n) = min ↑m ↑n
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        @[simp]
        theorem ENat.toENNReal_max (m : ℕ∞) (n : ℕ∞) :
        ↑(max m n) = max ↑m ↑n
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        @[simp]
        theorem ENat.toENNReal_sub (m : ℕ∞) (n : ℕ∞) :
        ↑(m - n) = ↑m - ↑n