1-to-1 correspondence

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

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

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