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Type | Label | Description |
---|---|---|
Statement | ||
Definition | df-5 8101 | Define the number 5. (Contributed by NM, 27-May-1999.) |
Definition | df-6 8102 | Define the number 6. (Contributed by NM, 27-May-1999.) |
Definition | df-7 8103 | Define the number 7. (Contributed by NM, 27-May-1999.) |
Definition | df-8 8104 | Define the number 8. (Contributed by NM, 27-May-1999.) |
Definition | df-9 8105 | Define the number 9. (Contributed by NM, 27-May-1999.) |
Theorem | 0ne1 8106 | (common case). See aso 1ap0 7690. (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 1ne0 8107 | . See aso 1ap0 7690. (Contributed by Jim Kingdon, 9-Mar-2020.) |
Theorem | 1m1e0 8108 | (common case). (Contributed by David A. Wheeler, 7-Jul-2016.) |
Theorem | 2re 8109 | The number 2 is real. (Contributed by NM, 27-May-1999.) |
Theorem | 2cn 8110 | The number 2 is a complex number. (Contributed by NM, 30-Jul-2004.) |
Theorem | 2ex 8111 | 2 is a set (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 2cnd 8112 | 2 is a complex number, deductive form (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 3re 8113 | The number 3 is real. (Contributed by NM, 27-May-1999.) |
Theorem | 3cn 8114 | The number 3 is a complex number. (Contributed by FL, 17-Oct-2010.) |
Theorem | 3ex 8115 | 3 is a set (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 4re 8116 | The number 4 is real. (Contributed by NM, 27-May-1999.) |
Theorem | 4cn 8117 | The number 4 is a complex number. (Contributed by David A. Wheeler, 7-Jul-2016.) |
Theorem | 5re 8118 | The number 5 is real. (Contributed by NM, 27-May-1999.) |
Theorem | 5cn 8119 | The number 5 is complex. (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 6re 8120 | The number 6 is real. (Contributed by NM, 27-May-1999.) |
Theorem | 6cn 8121 | The number 6 is complex. (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 7re 8122 | The number 7 is real. (Contributed by NM, 27-May-1999.) |
Theorem | 7cn 8123 | The number 7 is complex. (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 8re 8124 | The number 8 is real. (Contributed by NM, 27-May-1999.) |
Theorem | 8cn 8125 | The number 8 is complex. (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 9re 8126 | The number 9 is real. (Contributed by NM, 27-May-1999.) |
Theorem | 9cn 8127 | The number 9 is complex. (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 0le0 8128 | Zero is nonnegative. (Contributed by David A. Wheeler, 7-Jul-2016.) |
Theorem | 0le2 8129 | 0 is less than or equal to 2. (Contributed by David A. Wheeler, 7-Dec-2018.) |
Theorem | 2pos 8130 | The number 2 is positive. (Contributed by NM, 27-May-1999.) |
Theorem | 2ne0 8131 | The number 2 is nonzero. (Contributed by NM, 9-Nov-2007.) |
Theorem | 2ap0 8132 | The number 2 is apart from zero. (Contributed by Jim Kingdon, 9-Mar-2020.) |
# | ||
Theorem | 3pos 8133 | The number 3 is positive. (Contributed by NM, 27-May-1999.) |
Theorem | 3ne0 8134 | The number 3 is nonzero. (Contributed by FL, 17-Oct-2010.) (Proof shortened by Andrew Salmon, 7-May-2011.) |
Theorem | 3ap0 8135 | The number 3 is apart from zero. (Contributed by Jim Kingdon, 10-Oct-2021.) |
# | ||
Theorem | 4pos 8136 | The number 4 is positive. (Contributed by NM, 27-May-1999.) |
Theorem | 4ne0 8137 | The number 4 is nonzero. (Contributed by David A. Wheeler, 5-Dec-2018.) |
Theorem | 4ap0 8138 | The number 4 is apart from zero. (Contributed by Jim Kingdon, 10-Oct-2021.) |
# | ||
Theorem | 5pos 8139 | The number 5 is positive. (Contributed by NM, 27-May-1999.) |
Theorem | 6pos 8140 | The number 6 is positive. (Contributed by NM, 27-May-1999.) |
Theorem | 7pos 8141 | The number 7 is positive. (Contributed by NM, 27-May-1999.) |
Theorem | 8pos 8142 | The number 8 is positive. (Contributed by NM, 27-May-1999.) |
Theorem | 9pos 8143 | The number 9 is positive. (Contributed by NM, 27-May-1999.) |
This includes adding two pairs of values 1..10 (where the right is less than the left) and where the left is less than the right for the values 1..10. | ||
Theorem | neg1cn 8144 | -1 is a complex number (common case). (Contributed by David A. Wheeler, 7-Jul-2016.) |
Theorem | neg1rr 8145 | -1 is a real number (common case). (Contributed by David A. Wheeler, 5-Dec-2018.) |
Theorem | neg1ne0 8146 | -1 is nonzero (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | neg1lt0 8147 | -1 is less than 0 (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | neg1ap0 8148 | -1 is apart from zero. (Contributed by Jim Kingdon, 9-Jun-2020.) |
# | ||
Theorem | negneg1e1 8149 | is 1 (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 1pneg1e0 8150 | is 0 (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 0m0e0 8151 | 0 minus 0 equals 0 (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 1m0e1 8152 | 1 - 0 = 1 (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 0p1e1 8153 | 0 + 1 = 1. (Contributed by David A. Wheeler, 7-Jul-2016.) |
Theorem | 1p0e1 8154 | 1 + 0 = 1. (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 1p1e2 8155 | 1 + 1 = 2. (Contributed by NM, 1-Apr-2008.) |
Theorem | 2m1e1 8156 | 2 - 1 = 1. The result is on the right-hand-side to be consistent with similar proofs like 4p4e8 8177. (Contributed by David A. Wheeler, 4-Jan-2017.) |
Theorem | 1e2m1 8157 | 1 = 2 - 1 (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 3m1e2 8158 | 3 - 1 = 2. (Contributed by FL, 17-Oct-2010.) (Revised by NM, 10-Dec-2017.) |
Theorem | 2p2e4 8159 | Two plus two equals four. For more information, see "2+2=4 Trivia" on the Metamath Proof Explorer Home Page: http://us.metamath.org/mpeuni/mmset.html#trivia. (Contributed by NM, 27-May-1999.) |
Theorem | 2times 8160 | Two times a number. (Contributed by NM, 10-Oct-2004.) (Revised by Mario Carneiro, 27-May-2016.) (Proof shortened by AV, 26-Feb-2020.) |
Theorem | times2 8161 | A number times 2. (Contributed by NM, 16-Oct-2007.) |
Theorem | 2timesi 8162 | Two times a number. (Contributed by NM, 1-Aug-1999.) |
Theorem | times2i 8163 | A number times 2. (Contributed by NM, 11-May-2004.) |
Theorem | 2div2e1 8164 | 2 divided by 2 is 1 (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 2p1e3 8165 | 2 + 1 = 3. (Contributed by Mario Carneiro, 18-Apr-2015.) |
Theorem | 1p2e3 8166 | 1 + 2 = 3 (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 3p1e4 8167 | 3 + 1 = 4. (Contributed by Mario Carneiro, 18-Apr-2015.) |
Theorem | 4p1e5 8168 | 4 + 1 = 5. (Contributed by Mario Carneiro, 18-Apr-2015.) |
Theorem | 5p1e6 8169 | 5 + 1 = 6. (Contributed by Mario Carneiro, 18-Apr-2015.) |
Theorem | 6p1e7 8170 | 6 + 1 = 7. (Contributed by Mario Carneiro, 18-Apr-2015.) |
Theorem | 7p1e8 8171 | 7 + 1 = 8. (Contributed by Mario Carneiro, 18-Apr-2015.) |
Theorem | 8p1e9 8172 | 8 + 1 = 9. (Contributed by Mario Carneiro, 18-Apr-2015.) |
Theorem | 3p2e5 8173 | 3 + 2 = 5. (Contributed by NM, 11-May-2004.) |
Theorem | 3p3e6 8174 | 3 + 3 = 6. (Contributed by NM, 11-May-2004.) |
Theorem | 4p2e6 8175 | 4 + 2 = 6. (Contributed by NM, 11-May-2004.) |
Theorem | 4p3e7 8176 | 4 + 3 = 7. (Contributed by NM, 11-May-2004.) |
Theorem | 4p4e8 8177 | 4 + 4 = 8. (Contributed by NM, 11-May-2004.) |
Theorem | 5p2e7 8178 | 5 + 2 = 7. (Contributed by NM, 11-May-2004.) |
Theorem | 5p3e8 8179 | 5 + 3 = 8. (Contributed by NM, 11-May-2004.) |
Theorem | 5p4e9 8180 | 5 + 4 = 9. (Contributed by NM, 11-May-2004.) |
Theorem | 6p2e8 8181 | 6 + 2 = 8. (Contributed by NM, 11-May-2004.) |
Theorem | 6p3e9 8182 | 6 + 3 = 9. (Contributed by NM, 11-May-2004.) |
Theorem | 7p2e9 8183 | 7 + 2 = 9. (Contributed by NM, 11-May-2004.) |
Theorem | 1t1e1 8184 | 1 times 1 equals 1. (Contributed by David A. Wheeler, 7-Jul-2016.) |
Theorem | 2t1e2 8185 | 2 times 1 equals 2. (Contributed by David A. Wheeler, 6-Dec-2018.) |
Theorem | 2t2e4 8186 | 2 times 2 equals 4. (Contributed by NM, 1-Aug-1999.) |
Theorem | 3t1e3 8187 | 3 times 1 equals 3. (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 3t2e6 8188 | 3 times 2 equals 6. (Contributed by NM, 2-Aug-2004.) |
Theorem | 3t3e9 8189 | 3 times 3 equals 9. (Contributed by NM, 11-May-2004.) |
Theorem | 4t2e8 8190 | 4 times 2 equals 8. (Contributed by NM, 2-Aug-2004.) |
Theorem | 2t0e0 8191 | 2 times 0 equals 0. (Contributed by David A. Wheeler, 8-Dec-2018.) |
Theorem | 4d2e2 8192 | One half of four is two. (Contributed by NM, 3-Sep-1999.) |
Theorem | 2nn 8193 | 2 is a positive integer. (Contributed by NM, 20-Aug-2001.) |
Theorem | 3nn 8194 | 3 is a positive integer. (Contributed by NM, 8-Jan-2006.) |
Theorem | 4nn 8195 | 4 is a positive integer. (Contributed by NM, 8-Jan-2006.) |
Theorem | 5nn 8196 | 5 is a positive integer. (Contributed by Mario Carneiro, 15-Sep-2013.) |
Theorem | 6nn 8197 | 6 is a positive integer. (Contributed by Mario Carneiro, 15-Sep-2013.) |
Theorem | 7nn 8198 | 7 is a positive integer. (Contributed by Mario Carneiro, 15-Sep-2013.) |
Theorem | 8nn 8199 | 8 is a positive integer. (Contributed by Mario Carneiro, 15-Sep-2013.) |
Theorem | 9nn 8200 | 9 is a positive integer. (Contributed by NM, 21-Oct-2012.) |
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