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Theorem List for Metamath Proof Explorer - 9101-9200   *Has distinct variable group(s)
TypeLabelDescription
Statement

Theoremnegeq0 9101 A number is zero iff its negative is zero. (Contributed by NM, 12-Jul-2005.) (Revised by Mario Carneiro, 27-May-2016.)

Theoremsubcan 9102 Cancellation law for subtraction. (Contributed by NM, 8-Feb-2005.) (Revised by Mario Carneiro, 27-May-2016.)

Theoremnegsubdi 9103 Distribution of negative over subtraction. (Contributed by NM, 15-Nov-2004.) (Proof shortened by Mario Carneiro, 27-May-2016.)

Theoremnegdi 9104 Distribution of negative over addition. (Contributed by NM, 10-May-2004.) (Proof shortened by Mario Carneiro, 27-May-2016.)

Theoremnegdi2 9105 Distribution of negative over addition. (Contributed by NM, 1-Jan-2006.)

Theoremnegsubdi2 9106 Distribution of negative over subtraction. (Contributed by NM, 4-Oct-1999.)

Theoremneg2sub 9107 Relationship between subtraction and negative. (Contributed by Paul Chapman, 8-Oct-2007.)

Theoremrenegcli 9108 Closure law for negative of reals. (Note: this inference proof style and the deduction theorem usage in renegcl 9110 is deprecated, but is retained for its demonstration value.) (Contributed by NM, 17-Jan-1997.) (Proof shortened by Andrew Salmon, 22-Oct-2011.)

Theoremresubcli 9109 Closure law for subtraction of reals. (Contributed by NM, 17-Jan-1997.) (Revised by Mario Carneiro, 27-May-2016.)

Theoremrenegcl 9110 Closure law for negative of reals. The weak deduction theorem dedth 3606 is used to convert hypothesis of the inference (deduction) form of this theorem, renegcli 9108, to an antecedent. (Contributed by NM, 20-Jan-1997.) (Proof modification is discouraged.)

Theoremresubcl 9111 Closure law for subtraction of reals. (Contributed by NM, 20-Jan-1997.)

Theoremnegreb 9112 The negative of a real is real. (Contributed by NM, 11-Aug-1999.) (Revised by Mario Carneiro, 14-Jul-2014.)

Theorempeano2rem 9113 "Reverse" second Peano postulate analog for reals. (Contributed by NM, 6-Feb-2007.)

Theoremnegcli 9114 Closure law for negative. (Contributed by NM, 26-Nov-1994.)

Theoremnegidi 9115 Addition of a number and its negative. (Contributed by NM, 26-Nov-1994.)

Theoremnegnegi 9116 A number is equal to the negative of its negative. Theorem I.4 of [Apostol] p. 18. (Contributed by NM, 8-Feb-1995.) (Proof shortened by Andrew Salmon, 22-Oct-2011.)

Theoremsubidi 9117 Subtraction of a number from itself. (Contributed by NM, 26-Nov-1994.)

Theoremsubid1i 9118 Identity law for subtraction. (Contributed by NM, 29-May-1999.)

Theoremnegne0bi 9119 A number is nonzero iff its negative is nonzero. (Contributed by NM, 10-Aug-1999.)

Theoremnegrebi 9120 The negative of a real is real. (Contributed by NM, 11-Aug-1999.)

Theoremnegne0i 9121 The negative of a nonzero number is nonzero. (Contributed by NM, 30-Jul-2004.)

Theoremsubcli 9122 Closure law for subtraction. (Contributed by NM, 26-Nov-1994.) (Revised by Mario Carneiro, 21-Dec-2013.)

Theorempncan3i 9123 Subtraction and addition of equals. (Contributed by NM, 26-Nov-1994.)

Theoremnegsubi 9124 Relationship between subtraction and negative. Theorem I.3 of [Apostol] p. 18. (Contributed by NM, 26-Nov-1994.) (Proof shortened by Andrew Salmon, 22-Oct-2011.)

Theoremsubnegi 9125 Relationship between subtraction and negative. (Contributed by NM, 1-Dec-2005.)

Theoremsubeq0i 9126 If the difference between two numbers is zero, they are equal. (Contributed by NM, 8-May-1999.)

Theoremneg11i 9127 Negative is one-to-one. (Contributed by NM, 1-Aug-1999.)

Theoremnegcon1i 9128 Negative contraposition law. (Contributed by NM, 25-Aug-1999.)

Theoremnegcon2i 9129 Negative contraposition law. (Contributed by NM, 25-Aug-1999.)

Theoremnegdii 9130 Distribution of negative over addition. (Contributed by NM, 28-Jul-1999.) (Proof shortened by Andrew Salmon, 19-Nov-2011.)

Theoremnegsubdii 9131 Distribution of negative over subtraction. (Contributed by NM, 6-Aug-1999.)

Theoremnegsubdi2i 9132 Distribution of negative over subtraction. (Contributed by NM, 1-Oct-1999.)

Theoremsubaddi 9133 Relationship between subtraction and addition. (Contributed by NM, 26-Nov-1994.) (Revised by Mario Carneiro, 21-Dec-2013.)

Theoremsubsub23i 9136 Swap subtrahend and result of subtraction. (Contributed by NM, 7-Oct-1999.)

Theoremaddsubassi 9137 Associative-type law for subtraction and addition. (Contributed by NM, 16-Sep-1999.)

Theoremsubcani 9139 Cancellation law for subtraction. (Contributed by NM, 8-Feb-2005.)

Theoremsubcan2i 9140 Cancellation law for subtraction. (Contributed by NM, 8-Feb-2005.)

Theorempnncani 9141 Cancellation law for mixed addition and subtraction. (Contributed by NM, 14-Jan-2006.)

Theoremaddsub4i 9142 Rearrangement of 4 terms in a mixed addition and subtraction. (Contributed by NM, 17-Oct-1999.)

Theorem0reALT 9143 0 is a real number. (Contributed by NM, 19-Feb-2005.) (Proof modification is discouraged.) (New usage is discouraged.)

Theoremnegcld 9144 Closure law for negative. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremsubidd 9145 Subtraction of a number from itself. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremsubid1d 9146 Identity law for subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnegidd 9147 Addition of a number and its negative. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnegnegd 9148 A number is equal to the negative of its negative. Theorem I.4 of [Apostol] p. 18. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnegeq0d 9149 A number is zero iff its negative is zero. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnegne0bd 9150 A number is nonzero iff its negative is nonzero. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnegcon1d 9151 Contraposition law for unary minus. Deduction form of negcon1 9099. (Contributed by David Moews, 28-Feb-2017.)

Theoremnegcon1ad 9152 Contraposition law for unary minus. One-way deduction form of negcon1 9099. (Contributed by David Moews, 28-Feb-2017.)

Theoremneg11ad 9153 The negatives of two complex numbers are equal iff they are equal. Deduction form of neg11 9098. Generalization of neg11d 9169. (Contributed by David Moews, 28-Feb-2017.)

Theoremnegned 9154 If two complex numbers are unequal, so are their negatives. Contrapositive of neg11d 9169. (Contributed by David Moews, 28-Feb-2017.)

Theoremnegne0d 9155 The negative of a nonzero number is nonzero. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnegrebd 9156 The negative of a real is real. (Contributed by Mario Carneiro, 28-May-2016.)

Theoremsubcld 9157 Closure law for subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theorempncand 9158 Cancellation law for subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theorempncan2d 9159 Cancellation law for subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theorempncan3d 9160 Subtraction and addition of equals. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnpcand 9161 Cancellation law for subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnncand 9162 Cancellation law for subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnegsubd 9163 Relationship between subtraction and negative. Theorem I.3 of [Apostol] p. 18. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremsubnegd 9164 Relationship between subtraction and negative. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremsubeq0d 9165 If the difference between two numbers is zero, they are equal. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremsubne0d 9166 Two unequal numbers have nonzero difference. (Contributed by Mario Carneiro, 1-Jan-2017.)

Theoremsubeq0ad 9167 The difference of two complex numbers is zero iff they are equal. Deduction form of subeq0 9073. Generalization of subeq0d 9165. (Contributed by David Moews, 28-Feb-2017.)

Theoremsubne0ad 9168 If the difference of two complex numbers is nonzero, they are unequal. Converse of subne0d 9166. Contrapositive of subeq0bd 9209. (Contributed by David Moews, 28-Feb-2017.)

Theoremneg11d 9169 If the difference between two numbers is zero, they are equal. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnegdid 9170 Distribution of negative over addition. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnegdi2d 9171 Distribution of negative over addition. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnegsubdid 9172 Distribution of negative over subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnegsubdi2d 9173 Distribution of negative over subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremneg2subd 9174 Relationship between subtraction and negative. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremsubaddd 9175 Relationship between subtraction and addition. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremsubadd2d 9176 Relationship between subtraction and addition. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremaddsubassd 9177 Associative-type law for subtraction and addition. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremaddsubd 9178 Law for subtraction and addition. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremsubadd23d 9179 Commutative/associative law for addition and subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremaddsub12d 9180 Commutative/associative law for addition and subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnpncand 9181 Cancellation law for subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnppcand 9182 Cancellation law for subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnppcan2d 9183 Cancellation law for subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnppcan3d 9184 Cancellation law for subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremsubsubd 9185 Law for double subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremsubsub2d 9186 Law for double subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremsubsub3d 9187 Law for double subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremsubsub4d 9188 Law for double subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremsub32d 9189 Swap the second and third terms in a double subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnnncand 9190 Cancellation law for subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnnncan1d 9191 Cancellation law for subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnnncan2d 9192 Cancellation law for subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremnpncan3d 9193 Cancellation law for subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theorempnpcand 9194 Cancellation law for mixed addition and subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theorempnpcan2d 9195 Cancellation law for mixed addition and subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theorempnncand 9196 Cancellation law for mixed addition and subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremppncand 9197 Cancellation law for mixed addition and subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremsubcand 9198 Cancellation law for subtraction. (Contributed by Mario Carneiro, 27-May-2016.)

Theoremsubcan2d 9199 Cancellation law for subtraction. (Contributed by Mario Carneiro, 22-Sep-2016.)

Theoremsubcanad 9200 Cancellation law for subtraction. Deduction form of subcan 9102. Generalization of subcand 9198. (Contributed by David Moews, 28-Feb-2017.)

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