1-to-1 mapping

One-to-one, Injective function, 1 + 1 + 1 + 1 + ⋯, 1×1=1 (To Be One), 1+1, 1/2 + 1/4 + 1/8 + 1/16 + ⋯, 1:1, 1, 1/4 + 1/16 + 1/64 + 1/256 + ⋯, 1/2 − 1/4 + 1/8 − 1/16 + ⋯, 1+1 (TV channel), Schweizer SGP 1-1, −1, 1-Aminoindane, 1 Samuel 1, 1.1.1-Propellane, 1.1.1.1, 1.1, 1 of 1 (Shinee album), K-1, List of 9-1-1 episodes, 1+1 Media Group, 1 Chronicles 1, 1-1, 1&1 AG, Des(1-3)IGF-1, 1-Androsterone, Sat.1, Genesis 1:1, 1-Naphthylaminopropane, Peptidase 1 (mite), 1-Methyltryptamine, IN-1, 1-(1-Naphthyl)piperazine, Smart 1, 1-Aminocyclopropane-1-carboxylate synthase, 1-Aminotetralin, World 1-1, Sin-1, Csc-1, Cot-1

Tan-1, System 1, 2-in-1 laptop, Cos-1, Sec-1, List of 9-1-1: Lone Star episodes, RP-1, 1+1 (song), YSES 1, M-1 Global, Proverbs 1, 8-1-1, 1 series, Meteor-1 1, Wrestle-1, Schweizer SGU 1-19, 1–2–1–1 zone press, Alpha-1 blocker, 9-1-1: Lone Star, 1% rule, 1-bit computing, 2015 in K-1, John 1, Cyclooxygenase-1, TGC-1, 1-Aminomethylindane, Matthew 1:1, 1 Squadron, GS-1, 1-Hydroxyphenanthrene, List of K-1 events, 1.1-inch/75-caliber gun, Yuegong-1, (R)-1-Aminoindane, Jodi No.1, Apiose 1-reductase, VMCJ-1, 1-Butene, Alpha 1, Continental KB-1, Line 1, 1 to 3, Aldose 1-dehydrogenase, IGF-1 LR3, SMART-1, 1 Samuel 7, U.S. Route 1/9, (1-hydroxycyclohexan-1-yl)acetyl-CoA lyase, MIR7-1, Job 1

One-to-one, Injective function, 1 + 1 + 1 + 1 + ⋯, 1×1=1 (To Be One), 1+1, 1/2 + 1/4 + 1/8 + 1/16 + ⋯, 1:1, 1, 1/4 + 1/16 + 1/64 + 1/256 + ⋯, 1/2 − 1/4 + 1/8 − 1/16 + ⋯, 1+1 (TV channel), Schweizer SGP 1-1, −1, 1-Aminoindane, 1 Samuel 1, 1.1.1-Propellane, 1.1.1.1, 1.1, 1 of 1 (Shinee album), K-1, List of 9-1-1 episodes, 1+1 Media Group, 1 Chronicles 1, 1-1, 1&1 AG, Des(1-3)IGF-1, 1-Androsterone, Sat.1, Genesis 1:1, 1-Naphthylaminopropane, Peptidase 1 (mite), 1-Methyltryptamine, IN-1, 1-(1-Naphthyl)piperazine, Smart 1, 1-Aminocyclopropane-1-carboxylate synthase, 1-Aminotetralin, World 1-1, Sin-1, Csc-1, Cot-1, Tan-1, System 1, 2-in-1 laptop, Cos-1, Sec-1, List of 9-1-1: Lone Star episodes, RP-1, 1+1 (song), YSES 1, M-1 Global, Proverbs 1, 8-1-1, 1 series, Meteor-1 1, Wrestle-1, Schweizer SGU 1-19, 1–2–1–1 zone press, Alpha-1 blocker, 9-1-1: Lone Star, 1% rule, 1-bit computing, 2015 in K-1, John 1, Cyclooxygenase-1, TGC-1, 1-Aminomethylindane, Matthew 1:1, 1 Squadron, GS-1, 1-Hydroxyphenanthrene, List of K-1 events, 1.1-inch/75-caliber gun, Yuegong-1, (R)-1-Aminoindane, Jodi No.1, Apiose 1-reductase, VMCJ-1, 1-Butene, Alpha 1, Continental KB-1, Line 1, 1 to 3, Aldose 1-dehydrogenase, IGF-1 LR3, SMART-1, 1 Samuel 7, U.S. Route 1/9, (1-hydroxycyclohexan-1-yl)acetyl-CoA lyase, MIR7-1, Job 1, (S)-1-phenylethanol dehydrogenase, Wrestle-1 Championship, Chromosome 1, Raad-1, BNT 1, SpareBank 1, Glucose 1-dehydrogenase, Soundtrack 1, 1 − 2 + 3 − 4 + ⋯, NK2 homeobox 1, 1 Samuel 5, MRT 1, Latin-1 Supplement, 1-Propanol, NKX3-1, Acts 1, USS SC-1, U.S. Route 1, Revelation 1, Taepodong-1, 1. Liga, DOS 1, Zechariah 1, BBC Radio 1, Ribose 1-dehydrogenase (NADP+), L-galactose 1-dehydrogenase, 1 BC, Galactose 1-dehydrogenase (NADP+), Königstuhl 1, List of 9-1-1 characters, Falcon 1, GLP-1 receptor agonist, TVNZ 1, 1:144 scale, Glasflügel BS-1, Episode 1, A.1. Sauce, 1-Aminocyclopropane-1-carboxylic acid, Esther 1, Salyut 1, 5-1-1, Tier 1 network, Song of Songs 1, Farm to Market Road 1, Glucose 1-phosphate, MPEG-1, L-arabinose 1-dehydrogenase, Zerstörergeschwader 1, 1 × 1, AP-1 transcription factor, Glucose 1-dehydrogenase (NAD+), L-rhamnose 1-dehydrogenase, Nikon 1-mount, Malligyong-1, Glucose 1-dehydrogenase (NADP+), TOS-1, Russia-1, Issue 1, Internal Revenue Code section 1, Prague 1