|
| 1 | +{ |
| 2 | + "08f271887ce9": { |
| 3 | + "ref": [ |
| 4 | + "08f271887ce9" |
| 5 | + ], |
| 6 | + "statement": "M", |
| 7 | + "notes": { |
| 8 | + "title": "manifold M", |
| 9 | + "content": "The manifold M (Skolem constant for the universally quantified object)." |
| 10 | + } |
| 11 | + }, |
| 12 | + "70fb700dcda1": { |
| 13 | + "ref": [ |
| 14 | + "08f271887ce9" |
| 15 | + ], |
| 16 | + "statement": "\\mathrm{manifold3}(⟦08f271887ce9⟧)", |
| 17 | + "notes": { |
| 18 | + "title": "3-manifold", |
| 19 | + "content": "M is a 3-dimensional manifold." |
| 20 | + } |
| 21 | + }, |
| 22 | + "53e017a25873": { |
| 23 | + "ref": [ |
| 24 | + "08f271887ce9" |
| 25 | + ], |
| 26 | + "statement": "\\mathrm{closed}(⟦08f271887ce9⟧)", |
| 27 | + "notes": { |
| 28 | + "title": "closed", |
| 29 | + "content": "M is closed: compact and without boundary." |
| 30 | + } |
| 31 | + }, |
| 32 | + "6b67d6146914": { |
| 33 | + "ref": [ |
| 34 | + "08f271887ce9" |
| 35 | + ], |
| 36 | + "statement": "\\pi_1(⟦08f271887ce9⟧) = 1", |
| 37 | + "notes": { |
| 38 | + "title": "simply connected", |
| 39 | + "content": "The fundamental group of M is trivial." |
| 40 | + } |
| 41 | + }, |
| 42 | + "ddc5d8071d26": { |
| 43 | + "ref": [ |
| 44 | + "70fb700dcda1", |
| 45 | + "53e017a25873", |
| 46 | + "6b67d6146914" |
| 47 | + ], |
| 48 | + "statement": "⟦70fb700dcda1⟧ \\land ⟦53e017a25873⟧ \\land ⟦6b67d6146914⟧", |
| 49 | + "notes": { |
| 50 | + "title": "hypotheses", |
| 51 | + "content": "M is a simply connected, closed 3-manifold." |
| 52 | + } |
| 53 | + }, |
| 54 | + "1e95f7258e4c": { |
| 55 | + "ref": [ |
| 56 | + "1e95f7258e4c" |
| 57 | + ], |
| 58 | + "statement": "S^3", |
| 59 | + "notes": { |
| 60 | + "title": "3-sphere", |
| 61 | + "content": "The 3-dimensional sphere S³." |
| 62 | + } |
| 63 | + }, |
| 64 | + "b2cd37106ef5": { |
| 65 | + "ref": [ |
| 66 | + "08f271887ce9", |
| 67 | + "1e95f7258e4c" |
| 68 | + ], |
| 69 | + "statement": "\\mathrm{homeomorphic}(⟦08f271887ce9⟧, ⟦1e95f7258e4c⟧)", |
| 70 | + "notes": { |
| 71 | + "title": "homeomorphic to S³", |
| 72 | + "content": "M is homeomorphic to the 3-sphere S³." |
| 73 | + } |
| 74 | + }, |
| 75 | + "3dad30a9ab71": { |
| 76 | + "ref": [ |
| 77 | + "ddc5d8071d26", |
| 78 | + "b2cd37106ef5" |
| 79 | + ], |
| 80 | + "statement": "⟦ddc5d8071d26⟧ \\to ⟦b2cd37106ef5⟧", |
| 81 | + "notes": { |
| 82 | + "title": "Poincaré Conjecture", |
| 83 | + "content": "Every simply connected, closed 3-manifold is homeomorphic to the 3-sphere S³." |
| 84 | + } |
| 85 | + }, |
| 86 | + "5c62e091b8c0": { |
| 87 | + "ref": [ |
| 88 | + "5c62e091b8c0" |
| 89 | + ], |
| 90 | + "statement": "P", |
| 91 | + "notes": { |
| 92 | + "title": "standard piece P", |
| 93 | + "content": "A generic standard piece of the decomposition (free variable, implicitly universal)." |
| 94 | + } |
| 95 | + }, |
| 96 | + "a09d21500b1b": { |
| 97 | + "ref": [ |
| 98 | + "a09d21500b1b" |
| 99 | + ], |
| 100 | + "statement": "S^2 \\times S^1", |
| 101 | + "notes": { |
| 102 | + "title": "S² × S¹", |
| 103 | + "content": "The product of the 2-sphere and the circle." |
| 104 | + } |
| 105 | + }, |
| 106 | + "0a88a038bec0": { |
| 107 | + "ref": [ |
| 108 | + "0a88a038bec0" |
| 109 | + ], |
| 110 | + "statement": "\\mathbb{RP}^3 \\# \\mathbb{RP}^3", |
| 111 | + "notes": { |
| 112 | + "title": "ℝP³ # ℝP³", |
| 113 | + "content": "Connected sum of two real projective 3-spaces; π₁ = ℤ/2 * ℤ/2." |
| 114 | + } |
| 115 | + }, |
| 116 | + "02b022ba06c5": { |
| 117 | + "ref": [ |
| 118 | + "08f271887ce9" |
| 119 | + ], |
| 120 | + "statement": "\\mathrm{connSumOfStandardPieces}(⟦08f271887ce9⟧)", |
| 121 | + "notes": { |
| 122 | + "title": "finite connected sum", |
| 123 | + "content": "M is homeomorphic to a finite connected sum of standard pieces." |
| 124 | + } |
| 125 | + }, |
| 126 | + "4760ece6f4f6": { |
| 127 | + "ref": [ |
| 128 | + "5c62e091b8c0", |
| 129 | + "08f271887ce9" |
| 130 | + ], |
| 131 | + "statement": "\\mathrm{standardPiece}(⟦5c62e091b8c0⟧, ⟦08f271887ce9⟧)", |
| 132 | + "notes": { |
| 133 | + "title": "P is a standard piece", |
| 134 | + "content": "P occurs as a factor in the connected-sum decomposition of M." |
| 135 | + } |
| 136 | + }, |
| 137 | + "dc5fe156b050": { |
| 138 | + "ref": [ |
| 139 | + "5c62e091b8c0" |
| 140 | + ], |
| 141 | + "statement": "\\mathrm{sphericalSpaceForm}(⟦5c62e091b8c0⟧)", |
| 142 | + "notes": { |
| 143 | + "title": "spherical space form", |
| 144 | + "content": "P is homeomorphic to S³/Γ for a finite group Γ acting freely by isometries." |
| 145 | + } |
| 146 | + }, |
| 147 | + "dd50d5fdaccc": { |
| 148 | + "ref": [ |
| 149 | + "5c62e091b8c0", |
| 150 | + "a09d21500b1b" |
| 151 | + ], |
| 152 | + "statement": "\\mathrm{homeomorphic}(⟦5c62e091b8c0⟧, ⟦a09d21500b1b⟧)", |
| 153 | + "notes": { |
| 154 | + "title": "P ≅ S² × S¹", |
| 155 | + "content": "" |
| 156 | + } |
| 157 | + }, |
| 158 | + "a27b9c9b9e3c": { |
| 159 | + "ref": [ |
| 160 | + "5c62e091b8c0", |
| 161 | + "0a88a038bec0" |
| 162 | + ], |
| 163 | + "statement": "\\mathrm{homeomorphic}(⟦5c62e091b8c0⟧, ⟦0a88a038bec0⟧)", |
| 164 | + "notes": { |
| 165 | + "title": "P ≅ ℝP³ # ℝP³", |
| 166 | + "content": "" |
| 167 | + } |
| 168 | + }, |
| 169 | + "02abbe5cdbc6": { |
| 170 | + "ref": [ |
| 171 | + "4760ece6f4f6", |
| 172 | + "dc5fe156b050", |
| 173 | + "dd50d5fdaccc", |
| 174 | + "a27b9c9b9e3c" |
| 175 | + ], |
| 176 | + "statement": "⟦4760ece6f4f6⟧ \\to \\big(⟦dc5fe156b050⟧ \\lor ⟦dd50d5fdaccc⟧ \\lor ⟦a27b9c9b9e3c⟧\\big)", |
| 177 | + "notes": { |
| 178 | + "title": "classification of pieces", |
| 179 | + "content": "Every standard piece is a spherical space form, S² × S¹ (or its unorientable variant), or ℝP³ # ℝP³." |
| 180 | + } |
| 181 | + }, |
| 182 | + "b56fc4173210": { |
| 183 | + "ref": [ |
| 184 | + "5c62e091b8c0" |
| 185 | + ], |
| 186 | + "statement": "\\pi_1(⟦5c62e091b8c0⟧) = 1", |
| 187 | + "notes": { |
| 188 | + "title": "P simply connected", |
| 189 | + "content": "" |
| 190 | + } |
| 191 | + }, |
| 192 | + "18edb0114050": { |
| 193 | + "ref": [ |
| 194 | + "4760ece6f4f6", |
| 195 | + "b56fc4173210" |
| 196 | + ], |
| 197 | + "statement": "⟦4760ece6f4f6⟧ \\to ⟦b56fc4173210⟧", |
| 198 | + "notes": { |
| 199 | + "title": "pieces are simply connected", |
| 200 | + "content": "Every factor of the decomposition of M is simply connected." |
| 201 | + } |
| 202 | + }, |
| 203 | + "01b190b8abde": { |
| 204 | + "ref": [ |
| 205 | + "5c62e091b8c0", |
| 206 | + "1e95f7258e4c" |
| 207 | + ], |
| 208 | + "statement": "\\mathrm{homeomorphic}(⟦5c62e091b8c0⟧, ⟦1e95f7258e4c⟧)", |
| 209 | + "notes": { |
| 210 | + "title": "P ≅ S³", |
| 211 | + "content": "" |
| 212 | + } |
| 213 | + }, |
| 214 | + "db3c95b3da54": { |
| 215 | + "ref": [ |
| 216 | + "4760ece6f4f6", |
| 217 | + "01b190b8abde" |
| 218 | + ], |
| 219 | + "statement": "⟦4760ece6f4f6⟧ \\to ⟦01b190b8abde⟧", |
| 220 | + "notes": { |
| 221 | + "title": "every piece is S³", |
| 222 | + "content": "Every standard piece of the decomposition of M is homeomorphic to S³." |
| 223 | + } |
| 224 | + }, |
| 225 | + "5baee104cc6a": { |
| 226 | + "ref": [ |
| 227 | + "5baee104cc6a" |
| 228 | + ], |
| 229 | + "statement": "\\text{van Kampen: } \\pi_1(A \\# B) \\cong \\pi_1(A) * \\pi_1(B)", |
| 230 | + "notes": { |
| 231 | + "title": "cite: van Kampen", |
| 232 | + "content": "Fundamental group of a connected sum is the free product of the factors' groups; a free product is trivial iff every factor is trivial." |
| 233 | + } |
| 234 | + }, |
| 235 | + "f484ae4a1775": { |
| 236 | + "ref": [ |
| 237 | + "f484ae4a1775" |
| 238 | + ], |
| 239 | + "statement": "\\text{fundamental groups: } \\pi_1(S^3/\\Gamma) = \\Gamma,\\ \\pi_1(S^2 \\times S^1) = \\mathbb{Z},\\ \\pi_1(\\mathbb{RP}^3 \\# \\mathbb{RP}^3) = \\mathbb{Z}/2 * \\mathbb{Z}/2", |
| 240 | + "notes": { |
| 241 | + "title": "cite: π₁ of the pieces", |
| 242 | + "content": "Among the standard pieces, only S³ (Γ = 1) is simply connected." |
| 243 | + } |
| 244 | + }, |
| 245 | + "32417f9c091f": { |
| 246 | + "ref": [ |
| 247 | + "32417f9c091f" |
| 248 | + ], |
| 249 | + "statement": "\\text{connected sum: } S^3 \\# S^3 \\cong S^3", |
| 250 | + "notes": { |
| 251 | + "title": "cite: S³ idempotent", |
| 252 | + "content": "A finite connected sum of copies of S³ is homeomorphic to S³." |
| 253 | + } |
| 254 | + }, |
| 255 | + "53c5be962bd7": { |
| 256 | + "ref": [ |
| 257 | + "02b022ba06c5" |
| 258 | + ], |
| 259 | + "statement": "\\mathrm{sorry}(\\text{proof of } ⟦02b022ba06c5⟧ \\text{ via Ricci flow with surgery: existence for all time, finite-time extinction from } \\pi_3 \\neq 0 \\text{, finitely many surgeries, and reversal of the surgery history})", |
| 260 | + "notes": { |
| 261 | + "title": "HOLE: Ricci flow machinery", |
| 262 | + "content": "Everything analytic lives here: Perelman existence of the flow with surgery, Colding–Minicozzi finite-time extinction, volume bound on surgery count, and the topological reconstruction of M by undoing surgeries." |
| 263 | + } |
| 264 | + }, |
| 265 | + "07063e73256e": { |
| 266 | + "ref": [ |
| 267 | + "02abbe5cdbc6" |
| 268 | + ], |
| 269 | + "statement": "\\mathrm{sorry}(\\text{proof of } ⟦02abbe5cdbc6⟧ \\text{ via the canonical neighborhood classification of manifolds covered by } \\varepsilon\\text{-necks and caps})", |
| 270 | + "notes": { |
| 271 | + "title": "HOLE: canonical neighborhood classification", |
| 272 | + "content": "Classification of closed 3-manifolds entirely covered by canonical neighborhoods (ε-necks and ε-caps)." |
| 273 | + } |
| 274 | + }, |
| 275 | + "95cf63be2671": { |
| 276 | + "ref": [ |
| 277 | + "18edb0114050", |
| 278 | + "5baee104cc6a", |
| 279 | + "02b022ba06c5", |
| 280 | + "6b67d6146914" |
| 281 | + ], |
| 282 | + "statement": "⟦18edb0114050⟧ \\text{ by } ⟦5baee104cc6a⟧ \\text{ from } ⟦02b022ba06c5⟧, ⟦6b67d6146914⟧", |
| 283 | + "notes": { |
| 284 | + "title": "step: pieces simply connected", |
| 285 | + "content": "π₁(M) is the free product of the factors' fundamental groups; since π₁(M) = 1, every factor's group is trivial." |
| 286 | + } |
| 287 | + }, |
| 288 | + "b0cec8832750": { |
| 289 | + "ref": [ |
| 290 | + "db3c95b3da54", |
| 291 | + "f484ae4a1775", |
| 292 | + "02abbe5cdbc6", |
| 293 | + "18edb0114050" |
| 294 | + ], |
| 295 | + "statement": "⟦db3c95b3da54⟧ \\text{ by } ⟦f484ae4a1775⟧ \\text{ from } ⟦02abbe5cdbc6⟧, ⟦18edb0114050⟧", |
| 296 | + "notes": { |
| 297 | + "title": "step: pieces are S³", |
| 298 | + "content": "Each piece is one of the classified types and is simply connected; the group computation eliminates all but S³." |
| 299 | + } |
| 300 | + }, |
| 301 | + "40e5b86f2d92": { |
| 302 | + "ref": [ |
| 303 | + "b2cd37106ef5", |
| 304 | + "32417f9c091f", |
| 305 | + "02b022ba06c5", |
| 306 | + "db3c95b3da54" |
| 307 | + ], |
| 308 | + "statement": "⟦b2cd37106ef5⟧ \\text{ by } ⟦32417f9c091f⟧ \\text{ from } ⟦02b022ba06c5⟧, ⟦db3c95b3da54⟧", |
| 309 | + "notes": { |
| 310 | + "title": "step: M ≅ S³", |
| 311 | + "content": "M is a finite connected sum of copies of S³, hence homeomorphic to S³." |
| 312 | + } |
| 313 | + }, |
| 314 | + "797cb757c993": { |
| 315 | + "ref": [ |
| 316 | + "3dad30a9ab71", |
| 317 | + "ddc5d8071d26", |
| 318 | + "b2cd37106ef5" |
| 319 | + ], |
| 320 | + "statement": "⟦3dad30a9ab71⟧ \\text{ by implication introduction: assuming } ⟦ddc5d8071d26⟧\\text{, } ⟦b2cd37106ef5⟧ \\text{ was derived}", |
| 321 | + "notes": { |
| 322 | + "title": "step: close the theorem", |
| 323 | + "content": "Discharge the hypotheses to conclude the Poincaré conjecture." |
| 324 | + } |
| 325 | + } |
| 326 | +} |
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