. . "Senten\u00E7a aberta"@pt . "En \u00F6ppen utsaga \u00E4r en formel som inte \u00E4r en sats. En \u00F6ppen utsaga \u00E4r allts\u00E5 ett p\u00E5st\u00E5ende som inneh\u00E5ller minst en obunden variabel. Se vidare formel. Denna logik- och matematik-relaterade artikel saknar v\u00E4sentlig information. Du kan hj\u00E4lpa till genom att l\u00E4gga till den."@sv . . . "\u00D6ppen utsaga"@sv . . "Formula aperta"@it . "An open formula is a formula that contains at least one free variable. An open formula does not have a truth value assigned to it, in contrast with a closed formula which constitutes a proposition and thus can have a truth value like true or false. An open formula can be transformed into a closed formula by applying quantifiers or specifying of the domain of discourse of individuals for each free variable denoted x, y, z....or x1, x2, x3.... This transformation is called capture of the free variables to make them bound variables, bound to a domain of individual constants."@en . . . . . "\u0641\u064A \u0627\u0644\u0645\u0646\u0637\u0642 \u0627\u0644\u0631\u064A\u0627\u0636\u064A\u060C \u0627\u0644\u062C\u0645\u0644\u0629 \u0627\u0644\u0645\u0641\u062A\u0648\u062D\u0629 \u0647\u064A \u062A\u062D\u062A\u0648\u064A \u0645\u062A\u063A\u064A\u0631\u0627\u062A\u060C \u0648\u0639\u0644\u0649 \u062E\u0644\u0627\u0641 \u0627\u0644\u062C\u0645\u0644\u0629 \u0627\u0644\u0639\u0627\u062F\u064A\u0629 \u0627\u0644\u062A\u064A \u062A\u062D\u0648\u064A \u0639\u0644\u0649 \u062B\u0648\u0627\u0628\u062A \u0641\u0627\u0644\u062C\u0645\u0644\u0629 \u0627\u0644\u0645\u0641\u062A\u0648\u062D\u0629 \u0644\u0627 \u062A\u0639\u0637\u064A \u062D\u0642\u0627\u0626\u0642\u060C \u0628\u062D\u064A\u062B \u0644\u0627 \u064A\u0645\u0643\u0646 \u0627\u0644\u062D\u0643\u0645 \u0639\u0644\u064A\u0647\u0627 \u0625\u0646 \u0643\u0627\u0646\u062A \u0635\u062D\u064A\u062D\u0629 \u0623\u0645 \u062E\u0627\u0637\u0626\u0629. \u0645\u062B\u0644\u0627\u064B: \u0627\u0644\u0639\u0628\u0627\u0631\u0629 \u00ABx \u0647\u0648 \u0639\u062F\u062F \u0645\u0648\u062C\u0628\u00BB\u060C \u0644\u0627 \u064A\u0645\u0643\u0646 \u0627\u0644\u062D\u0643\u0645 \u0639\u0644\u0649 \u0643\u0648\u0646\u0647\u0627 \u0635\u062D\u064A\u062D\u0629. \u064A\u0642\u0627\u0644 \u0639\u0646 \u0627\u0644\u062C\u0645\u0644\u0629 \u0627\u0644\u0645\u0641\u062A\u0648\u062D\u0629 \u0628\u0623\u0646\u0647\u0627 \u0645\u062D\u0642\u0642\u0629 \u0625\u0630\u0627 \u0648\u062C\u062F \u0639\u0646\u0635\u0631 \u0628\u062A\u0628\u062F\u064A\u0644\u0647 \u0641\u064A \u0627\u0644\u062C\u0645\u0644\u0629 \u064A\u0645\u0643\u0646 \u0627\u0644\u062D\u0643\u0645 \u0639\u0644\u064A\u0647\u0627 \u0628\u0623\u0646\u0647\u0627 \u0635\u062D\u064A\u062D\u0629. \u0641\u0645\u062B\u0644\u0627\u064B \u0641\u064A \u0627\u0644\u0645\u062B\u0627\u0644 \u0627\u0644\u0633\u0627\u0628\u0642 \u0646\u0642\u0648\u0644 \u0639\u0646 \u0627\u0644\u0639\u0628\u0627\u0631\u0629 \u00AB5 \u0647\u0648 \u0639\u062F\u062F \u0645\u0648\u062C\u0628\u00BB \u0628\u0623\u0646\u0647\u0627 \u062C\u0645\u0644\u0629 \u0645\u062D\u0642\u0642\u0629."@ar . "\u5F00\u653E\u53E5\u5B50\u662F\u300C\u5728\u7528\u7279\u5B9A\u7684\u6570\uFF0C\u66FF\u4EE3\u5176\u4E2D\u7684\u53D8\u91CF\u7684\u65F6\u5019\uFF0C\u5C06\u4F7F\u5F97\u7ED3\u679C\u7684\u8868\u8FBE\u5F0F\u88AB\u6C42\u503C\u4E3A\u771F\u7684\u4E00\u4E2A\u53E5\u5B50\u300D\u3002 \u6570\u5B66\u5BB6\u6CA1\u6709\u63A5\u53D7\u8FD9\u79CD\u672F\u8BED\uFF0C\u800C\u662F\u79F0\u4E4B\u4E3A\u5E26\u6709\u81EA\u7531\u53D8\u91CF\u7684\u65B9\u7A0B\u5F0F\u6216\u4E0D\u7B49\u5F0F\u7B49\u3002 \u8FD9\u79CD\u66FF\u4EE3\u4E5F\u53EB\u505A\u5BF9\u53E5\u5B50\u7684\u89E3\u3002\u6052\u7B49\u5F0F\u662F\u6240\u6709\u6570\u90FD\u662F\u89E3\u7684\u5F00\u653E\u53E5\u5B50\u3002 \u5F00\u653E\u53E5\u5B50\u7684\u4F8B\u5B50\u5305\u62EC\uFF1A 1. \n* 3x \u2212 9 = 21, x\u7684\u552F\u4E00\u89E3\u662F10\uFF1B 2. \n* 4x + 3 > 9, x\u7684\u89E3\u662F\u6240\u6709\u5927\u4E8E3/2\u7684\u6570\uFF1B 3. \n* x + y = 0, x\u548Cy\u7684\u89E3\u662F\u6240\u6709\u7684\u6240\u6709\u6570\u7684\u6709\u5E8F\u5BF9\uFF1B 4. \n* 3x + 9 = 3(x + 3), x\u7684\u89E3\u662F\u6240\u6709\u6570\u3002 5. \n* 5x + 8 = 5(x + 5), x\u7121\u89E3\u3002 6. \n* x2 + 7 > 0, x\u7684\u89E3\u662F\u6240\u6709\u5BE6\u6578\u3002\u4F8B\u5B504\u662F\u6052\u7B49\u5F0F\u3002\u4F8B\u5B501\u30013\u30014\u548C5\u662F\u65B9\u7A0B\u5F0F\uFF0C\u800C\u4F8B\u5B502\u548C6\u662F\u4E0D\u7B49\u5F0F\u3002 \u6240\u6709\u5F00\u653E\u53E5\u5B50\u90FD\u5FC5\u987B\uFF08\u901A\u5E38\u6697\u542B\u7684\uFF09\u6709\u63CF\u8FF0\u90A3\u4E9B\u6570\u53EF\u88AB\u5F53\u4F5C\u89E3\u7684\u8BBA\u57DF\u3002\u4F8B\u5982\uFF0C\u4F60\u53EF\u4EE5\u8003\u8651\u6240\u6709\u5B9E\u6570\u6216\u53EA\u662F\u6574\u6570\u3002\u4F8B\u5982\uFF0C\u5728\u4F8B\u5B502\u4E2D\uFF0C1.6\u662F\u4E00\u4E2A\u89E3\uFF0C\u5982\u679C\u8BBA\u57DF\u662F\u6240\u6709\u5B9E\u6570\uFF0C\u5982\u679C\u8BBA\u57DF\u53EA\u662F\u6574\u6570\u5219\u4E0D\u662F\u3002\u5728\u8FD9\u79CD\u60C5\u51B5\u4E0B\uFF0C\u53EA\u6709\u5927\u4E8E3/2\u7684\u6574\u6570\u662F\u89E3\uFF1A2, 3, 4\u7B49\u7B49\u3002\u5728\u53E6\u4E00\u65B9\u9762\uFF0C\u5982\u679C\u8BBA\u57DF\u7531\u6240\u6709\u590D\u6570\u6784\u6210\uFF0C\u5219\u4F8B\u5B502\u751A\u81F3\u6CA1\u6709\u610F\u4E49\uFF08\u5C3D\u7BA1\u5176\u4ED6\u4F8B\u5B50\u6709\uFF09\u3002\u6052\u7B49\u5F0F\u53EA\u8981\u6C42\u5BF9\u5728\u5B83\u7684\u8BBA\u57DF\u4E2D\u7684\u6570\u6210\u7ACB\u3002 \u540C\u6837\u7684\u8BBA\u57DF\u53EF\u4EE5\u7528\u6765\u63CF\u8FF0\u5728\u7B26\u53F7\u903B\u8F91\u4E2D\u4F7F\u7528\u5168\u79F0\u91CF\u5316\u7684\u5F00\u653E\u53E5\u5B50\u7684\u89E3\u3002\u4F8B\u5982\uFF0C\u4F8B\u5B502\u7684\u89E3\u53EF\u4EE5\u63CF\u8FF0\u4E3A\uFF1A \u5BF9\u4E8E\u6240\u6709\u7684x, 4x + 3 > 9 \u5F53\u4E14\u4EC5\u5F53x > 3/2\u3002\u8FD9\u91CC\u7684\u77ED\u8BED\"\u5BF9\u4E8E\u6240\u6709\"\u9690\u542B\u7684\u8981\u6C42\u4E86\u4E00\u4E2A\u8BBA\u57DF\u6765\u6307\u5B9A\u54EA\u4E9B\u6570\u5B66\u5BF9\u8C61\u662Fx\u7684\"\u5168\u90E8\u7684\"\u53EF\u80FD\u6027\u3002 \u8FD9\u4E2A\u60F3\u6CD5\u751A\u81F3\u53EF\u4EE5\u63A8\u5E7F\u5230\u53D8\u91CF\u6839\u672C\u4E0D\u63D0\u53CA\u6570\u7684\u53D8\u91CF\u7684\u89E3\uFF0C\u5982\u5728\u51FD\u6570\u65B9\u7A0B\u4E2D\u3002\u4F8B\u5982 f * f = f, \u5B83\u58F0\u79F0\u5BF9\u4E8Ex\u7684\u6240\u6709\u7684\u503C\u6709f(x)* f(x) = f(x)\u3002\u5982\u679C\u8BBA\u57DF\u7531\u4ECE\u5B9E\u6570\u8F74R\u5230\u81EA\u8EAB\u7684\u6240\u6709\u51FD\u6570\u7EC4\u6210\uFF0C\u5219f\u7684\u89E3\u662F\u503C\u662F1\u548C0\u7684\u6240\u6709\u51FD\u6570\u3002\u4F46\u662F\u5982\u679C\u8BBA\u57DF\u7531\u4ECER\u5230\u81EA\u8EAB\u7684\u6240\u6709\u8FDE\u7EED\u51FD\u6570\u7EC4\u6210\uFF0C\u5219f\u7684\u89E3\u53EA\u662F\u6709\u503C1\u62160\u7684\u5E38\u91CF\u51FD\u6570\u3002"@zh . . . . . . "Rumus terbuka"@in . . . . . . . "\u0641\u064A \u0627\u0644\u0645\u0646\u0637\u0642 \u0627\u0644\u0631\u064A\u0627\u0636\u064A\u060C \u0627\u0644\u062C\u0645\u0644\u0629 \u0627\u0644\u0645\u0641\u062A\u0648\u062D\u0629 \u0647\u064A \u062A\u062D\u062A\u0648\u064A \u0645\u062A\u063A\u064A\u0631\u0627\u062A\u060C \u0648\u0639\u0644\u0649 \u062E\u0644\u0627\u0641 \u0627\u0644\u062C\u0645\u0644\u0629 \u0627\u0644\u0639\u0627\u062F\u064A\u0629 \u0627\u0644\u062A\u064A \u062A\u062D\u0648\u064A \u0639\u0644\u0649 \u062B\u0648\u0627\u0628\u062A \u0641\u0627\u0644\u062C\u0645\u0644\u0629 \u0627\u0644\u0645\u0641\u062A\u0648\u062D\u0629 \u0644\u0627 \u062A\u0639\u0637\u064A \u062D\u0642\u0627\u0626\u0642\u060C \u0628\u062D\u064A\u062B \u0644\u0627 \u064A\u0645\u0643\u0646 \u0627\u0644\u062D\u0643\u0645 \u0639\u0644\u064A\u0647\u0627 \u0625\u0646 \u0643\u0627\u0646\u062A \u0635\u062D\u064A\u062D\u0629 \u0623\u0645 \u062E\u0627\u0637\u0626\u0629. \u0645\u062B\u0644\u0627\u064B: \u0627\u0644\u0639\u0628\u0627\u0631\u0629 \u00ABx \u0647\u0648 \u0639\u062F\u062F \u0645\u0648\u062C\u0628\u00BB\u060C \u0644\u0627 \u064A\u0645\u0643\u0646 \u0627\u0644\u062D\u0643\u0645 \u0639\u0644\u0649 \u0643\u0648\u0646\u0647\u0627 \u0635\u062D\u064A\u062D\u0629. \u064A\u0642\u0627\u0644 \u0639\u0646 \u0627\u0644\u062C\u0645\u0644\u0629 \u0627\u0644\u0645\u0641\u062A\u0648\u062D\u0629 \u0628\u0623\u0646\u0647\u0627 \u0645\u062D\u0642\u0642\u0629 \u0625\u0630\u0627 \u0648\u062C\u062F \u0639\u0646\u0635\u0631 \u0628\u062A\u0628\u062F\u064A\u0644\u0647 \u0641\u064A \u0627\u0644\u062C\u0645\u0644\u0629 \u064A\u0645\u0643\u0646 \u0627\u0644\u062D\u0643\u0645 \u0639\u0644\u064A\u0647\u0627 \u0628\u0623\u0646\u0647\u0627 \u0635\u062D\u064A\u062D\u0629. \u0641\u0645\u062B\u0644\u0627\u064B \u0641\u064A \u0627\u0644\u0645\u062B\u0627\u0644 \u0627\u0644\u0633\u0627\u0628\u0642 \u0646\u0642\u0648\u0644 \u0639\u0646 \u0627\u0644\u0639\u0628\u0627\u0631\u0629 \u00AB5 \u0647\u0648 \u0639\u062F\u062F \u0645\u0648\u062C\u0628\u00BB \u0628\u0623\u0646\u0647\u0627 \u062C\u0645\u0644\u0629 \u0645\u062D\u0642\u0642\u0629."@ar . . "Na matem\u00E1tica, uma senten\u00E7a aberta ( equa\u00E7\u00E3o aberta ou inequa\u00E7\u00E3o aberta) \u00E9 descrita assim porque seu valor n\u00E3o pode ser determinado at\u00E9 que suas vari\u00E1veis \u200B\u200Bsejam substitu\u00EDdas por n\u00FAmeros espec\u00EDficos, quando seu valor geralmente pode ser determinado (e, portanto, a senten\u00E7a deixa de ser considerada como \"aberta\"). Essas vari\u00E1veis podem assumir valores reais ou complexos, dependendo da igualdade ou desigualdade em quest\u00E3o. Os valores que produzem uma igualdade ou desigualdade verdadeira s\u00E3o chamados solu\u00E7\u00F5es, e \"satisfazem\" a igualdade/desigualdade."@pt . "An open formula is a formula that contains at least one free variable. An open formula does not have a truth value assigned to it, in contrast with a closed formula which constitutes a proposition and thus can have a truth value like true or false. An open formula can be transformed into a closed formula by applying quantifiers or specifying of the domain of discourse of individuals for each free variable denoted x, y, z....or x1, x2, x3.... This transformation is called capture of the free variables to make them bound variables, bound to a domain of individual constants. For example, when reasoning about natural numbers, the formula \"x+2 > y\" is open, since it contains the free variables x and y. In contrast, the formula \"\u2203y \u2200x: x+2 > y\" is closed, and has truth value true. An example of closed formula with truth value false involves the sequence of Fermat numbers studied by Fermat in connection to the primality. The attachment of the predicate letter P (is prime) to each number from the Fermat sequence gives a set of false closed formulae when the rank n of the Fermat number is greater than 4. Thus the closed formula \u2200n P(Fn) is false."@en . . "228361"^^ . . . . "\u062C\u0645\u0644\u0629 \u0645\u0641\u062A\u0648\u062D\u0629 (\u0631\u064A\u0627\u0636\u064A\u0627\u062A)"@ar . . . "\u5F00\u653E\u53E5\u5B50"@zh . . "En \u00F6ppen utsaga \u00E4r en formel som inte \u00E4r en sats. En \u00F6ppen utsaga \u00E4r allts\u00E5 ett p\u00E5st\u00E5ende som inneh\u00E5ller minst en obunden variabel. Se vidare formel. Denna logik- och matematik-relaterade artikel saknar v\u00E4sentlig information. Du kan hj\u00E4lpa till genom att l\u00E4gga till den."@sv . "Rumus terbuka adalah rumus/formula yang mengandung setidaknya satu variabel bebas. Beberapa sumber daya pendidikan ada yang menggunakan istilah \"kalimat terbuka\", tapi penggunaan ini bertentangan dengan definisi \"kalimat\" seperti formula yang tidak mengandung variabel-variabel bebas."@in . . "\u5F00\u653E\u53E5\u5B50\u662F\u300C\u5728\u7528\u7279\u5B9A\u7684\u6570\uFF0C\u66FF\u4EE3\u5176\u4E2D\u7684\u53D8\u91CF\u7684\u65F6\u5019\uFF0C\u5C06\u4F7F\u5F97\u7ED3\u679C\u7684\u8868\u8FBE\u5F0F\u88AB\u6C42\u503C\u4E3A\u771F\u7684\u4E00\u4E2A\u53E5\u5B50\u300D\u3002 \u6570\u5B66\u5BB6\u6CA1\u6709\u63A5\u53D7\u8FD9\u79CD\u672F\u8BED\uFF0C\u800C\u662F\u79F0\u4E4B\u4E3A\u5E26\u6709\u81EA\u7531\u53D8\u91CF\u7684\u65B9\u7A0B\u5F0F\u6216\u4E0D\u7B49\u5F0F\u7B49\u3002 \u8FD9\u79CD\u66FF\u4EE3\u4E5F\u53EB\u505A\u5BF9\u53E5\u5B50\u7684\u89E3\u3002\u6052\u7B49\u5F0F\u662F\u6240\u6709\u6570\u90FD\u662F\u89E3\u7684\u5F00\u653E\u53E5\u5B50\u3002 \u5F00\u653E\u53E5\u5B50\u7684\u4F8B\u5B50\u5305\u62EC\uFF1A 1. \n* 3x \u2212 9 = 21, x\u7684\u552F\u4E00\u89E3\u662F10\uFF1B 2. \n* 4x + 3 > 9, x\u7684\u89E3\u662F\u6240\u6709\u5927\u4E8E3/2\u7684\u6570\uFF1B 3. \n* x + y = 0, x\u548Cy\u7684\u89E3\u662F\u6240\u6709\u7684\u6240\u6709\u6570\u7684\u6709\u5E8F\u5BF9\uFF1B 4. \n* 3x + 9 = 3(x + 3), x\u7684\u89E3\u662F\u6240\u6709\u6570\u3002 5. \n* 5x + 8 = 5(x + 5), x\u7121\u89E3\u3002 6. \n* x2 + 7 > 0, x\u7684\u89E3\u662F\u6240\u6709\u5BE6\u6578\u3002\u4F8B\u5B504\u662F\u6052\u7B49\u5F0F\u3002\u4F8B\u5B501\u30013\u30014\u548C5\u662F\u65B9\u7A0B\u5F0F\uFF0C\u800C\u4F8B\u5B502\u548C6\u662F\u4E0D\u7B49\u5F0F\u3002 \u6240\u6709\u5F00\u653E\u53E5\u5B50\u90FD\u5FC5\u987B\uFF08\u901A\u5E38\u6697\u542B\u7684\uFF09\u6709\u63CF\u8FF0\u90A3\u4E9B\u6570\u53EF\u88AB\u5F53\u4F5C\u89E3\u7684\u8BBA\u57DF\u3002\u4F8B\u5982\uFF0C\u4F60\u53EF\u4EE5\u8003\u8651\u6240\u6709\u5B9E\u6570\u6216\u53EA\u662F\u6574\u6570\u3002\u4F8B\u5982\uFF0C\u5728\u4F8B\u5B502\u4E2D\uFF0C1.6\u662F\u4E00\u4E2A\u89E3\uFF0C\u5982\u679C\u8BBA\u57DF\u662F\u6240\u6709\u5B9E\u6570\uFF0C\u5982\u679C\u8BBA\u57DF\u53EA\u662F\u6574\u6570\u5219\u4E0D\u662F\u3002\u5728\u8FD9\u79CD\u60C5\u51B5\u4E0B\uFF0C\u53EA\u6709\u5927\u4E8E3/2\u7684\u6574\u6570\u662F\u89E3\uFF1A2, 3, 4\u7B49\u7B49\u3002\u5728\u53E6\u4E00\u65B9\u9762\uFF0C\u5982\u679C\u8BBA\u57DF\u7531\u6240\u6709\u590D\u6570\u6784\u6210\uFF0C\u5219\u4F8B\u5B502\u751A\u81F3\u6CA1\u6709\u610F\u4E49\uFF08\u5C3D\u7BA1\u5176\u4ED6\u4F8B\u5B50\u6709\uFF09\u3002\u6052\u7B49\u5F0F\u53EA\u8981\u6C42\u5BF9\u5728\u5B83\u7684\u8BBA\u57DF\u4E2D\u7684\u6570\u6210\u7ACB\u3002 \u540C\u6837\u7684\u8BBA\u57DF\u53EF\u4EE5\u7528\u6765\u63CF\u8FF0\u5728\u7B26\u53F7\u903B\u8F91\u4E2D\u4F7F\u7528\u5168\u79F0\u91CF\u5316\u7684\u5F00\u653E\u53E5\u5B50\u7684\u89E3\u3002\u4F8B\u5982\uFF0C\u4F8B\u5B502\u7684\u89E3\u53EF\u4EE5\u63CF\u8FF0\u4E3A\uFF1A \u8FD9\u4E2A\u60F3\u6CD5\u751A\u81F3\u53EF\u4EE5\u63A8\u5E7F\u5230\u53D8\u91CF\u6839\u672C\u4E0D\u63D0\u53CA\u6570\u7684\u53D8\u91CF\u7684\u89E3\uFF0C\u5982\u5728\u51FD\u6570\u65B9\u7A0B\u4E2D\u3002\u4F8B\u5982"@zh . . . "1089256531"^^ . "2129"^^ . "Na matem\u00E1tica, uma senten\u00E7a aberta ( equa\u00E7\u00E3o aberta ou inequa\u00E7\u00E3o aberta) \u00E9 descrita assim porque seu valor n\u00E3o pode ser determinado at\u00E9 que suas vari\u00E1veis \u200B\u200Bsejam substitu\u00EDdas por n\u00FAmeros espec\u00EDficos, quando seu valor geralmente pode ser determinado (e, portanto, a senten\u00E7a deixa de ser considerada como \"aberta\"). Essas vari\u00E1veis podem assumir valores reais ou complexos, dependendo da igualdade ou desigualdade em quest\u00E3o. Os valores que produzem uma igualdade ou desigualdade verdadeira s\u00E3o chamados solu\u00E7\u00F5es, e \"satisfazem\" a igualdade/desigualdade. Na l\u00F3gica matem\u00E1tica, uma f\u00F3rmula aberta \u00E9 uma f\u00F3rmula que cont\u00E9m vari\u00E1veis \u200B\u200Blivres. (Note que na l\u00F3gica, uma \"senten\u00E7a\" \u00E9 uma f\u00F3rmula sem vari\u00E1veis \u200B\u200Blivres. Uma f\u00F3rmula \u00E9 \"aberta\" se ela n\u00E3o cont\u00E9m quantificadores). Ao contr\u00E1rio das f\u00F3rmulas fechadas, que cont\u00EAm constantes, f\u00F3rmulas abertas n\u00E3o expressam proposi\u00E7\u00F5es, pois elas n\u00E3o s\u00E3o verdadeiras nem falsas. Assim, a f\u00F3rmula \" \u00E9 um n\u00FAmero\" (I) n\u00E3o tem valor verdade. A f\u00F3rmula \u00E9 satisfeita por qualquer objeto que, escrito no lugar da vari\u00E1vel, vai formar uma senten\u00E7a verdadeira. Assim, \"5\" satisfaz (I). Qualquer senten\u00E7a que resulte de uma f\u00F3rmula \u00E9 dito ser um substituto da f\u00F3rmula. Logo, \"5 \u00E9 um n\u00FAmero\" \u00E9 um substituto de (I). Tais substitui\u00E7\u00F5es s\u00E3o conhecidas como solu\u00E7\u00F5es para a senten\u00E7a.Uma identidade \u00E9 uma senten\u00E7a aberta para a qual cada n\u00FAmero \u00E9 uma solu\u00E7\u00E3o."@pt . . . "Rumus terbuka adalah rumus/formula yang mengandung setidaknya satu variabel bebas. Beberapa sumber daya pendidikan ada yang menggunakan istilah \"kalimat terbuka\", tapi penggunaan ini bertentangan dengan definisi \"kalimat\" seperti formula yang tidak mengandung variabel-variabel bebas."@in . . . . "Open formula"@en .