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| Description: A number is less than itself plus 1. (Contributed by Mario Carneiro, 28-May-2016.) | 
| Ref | Expression | 
|---|---|
| ltp1d.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) | 
| Ref | Expression | 
|---|---|
| ltp1d | ⊢ (𝜑 → 𝐴 < (𝐴 + 1)) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | ltp1d.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 2 | ltp1 12108 | . 2 ⊢ (𝐴 ∈ ℝ → 𝐴 < (𝐴 + 1)) | |
| 3 | 1, 2 | syl 17 | 1 ⊢ (𝜑 → 𝐴 < (𝐴 + 1)) | 
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