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การเขียนสัญญลักษณ์บนเว็บ

Char Dec Hex Entity Name
∀ 8704 2200 ∀ FOR ALLTry it
∁ 8705 2201 COMPLEMENTTry it
∂ 8706 2202 ∂ PARTIAL DIFFERENTIALTry it
∃ 8707 2203 ∃ THERE EXISTSTry it
∄ 8708 2204 THERE DOES NOT EXISTTry it
∅ 8709 2205 ∅ EMPTY SETTry it
∆ 8710 2206 INCREMENTTry it
∇ 8711 2207 ∇ NABLATry it
∈ 8712 2208 ∈ ELEMENT OFTry it
∉ 8713 2209 ∉ NOT AN ELEMENT OFTry it
∊ 8714 220A SMALL ELEMENT OFTry it
∋ 8715 220B ∋ CONTAINS AS MEMBERTry it
∌ 8716 220C DOES NOT CONTAIN AS MEMBERTry it
∍ 8717 220D SMALL CONTAINS AS MEMBERTry it
∎ 8718 220E END OF PROOFTry it
∏ 8719 220F ∏ N-ARY PRODUCTTry it
∐ 8720 2210 N-ARY COPRODUCTTry it
∑ 8721 2211 ∑ N-ARY SUMMATIONTry it
− 8722 2212 − MINUS SIGNTry it
∓ 8723 2213 MINUS-OR-PLUS SIGNTry it
∔ 8724 2214 DOT PLUSTry it
∕ 8725 2215 DIVISION SLASHTry it
∖ 8726 2216 SET MINUSTry it
∗ 8727 2217 ∗ ASTERISK OPERATORTry it
∘ 8728 2218 RING OPERATORTry it
∙ 8729 2219 BULLET OPERATORTry it
√ 8730 221A √ SQUARE ROOTTry it
∛ 8731 221B CUBE ROOTTry it
∜ 8732 221C FOURTH ROOTTry it
∝ 8733 221D ∝ PROPORTIONAL TOTry it
∞ 8734 221E ∞ INFINITYTry it
∟ 8735 221F RIGHT ANGLETry it
∠ 8736 2220 ∠ ANGLETry it
∡ 8737 2221 MEASURED ANGLETry it
∢ 8738 2222 SPHERICAL ANGLETry it
∣ 8739 2223 DIVIDESTry it
∤ 8740 2224 DOES NOT DIVIDETry it
∥ 8741 2225 PARALLEL TOTry it
∦ 8742 2226 NOT PARALLEL TOTry it
∧ 8743 2227 ∧ LOGICAL ANDTry it
∨ 8744 2228 ∨ LOGICAL ORTry it
∩ 8745 2229 ∩ INTERSECTIONTry it
∪ 8746 222A ∪ UNIONTry it
∫ 8747 222B ∫ INTEGRALTry it
∬ 8748 222C DOUBLE INTEGRALTry it
∭ 8749 222D TRIPLE INTEGRALTry it
∮ 8750 222E CONTOUR INTEGRALTry it
∯ 8751 222F SURFACE INTEGRALTry it
∰ 8752 2230 VOLUME INTEGRALTry it
∱ 8753 2231 CLOCKWISE INTEGRALTry it
∲ 8754 2232 CLOCKWISE CONTOUR INTEGRALTry it
∳ 8755 2233 ANTICLOCKWISE CONTOUR INTEGRALTry it
∴ 8756 2234 ∴ THEREFORETry it
∵ 8757 2235 BECAUSETry it
∶ 8758 2236 RATIOTry it
∷ 8759 2237 PROPORTIONTry it
∸ 8760 2238 DOT MINUSTry it
∹ 8761 2239 EXCESSTry it
∺ 8762 223A GEOMETRIC PROPORTIONTry it
∻ 8763 223B HOMOTHETICTry it
∼ 8764 223C ∼ TILDE OPERATORTry it
∽ 8765 223D REVERSED TILDETry it
∾ 8766 223E INVERTED LAZY STry it
∿ 8767 223F SINE WAVETry it
≀ 8768 2240 WREATH PRODUCTTry it
≁ 8769 2241 NOT TILDETry it
≂ 8770 2242 MINUS TILDETry it
≃ 8771 2243 ASYMPTOTICALLY EQUAL TOTry it
≄ 8772 2244 NOT ASYMPTOTICALLY EQUAL TOTry it
≅ 8773 2245 ≅ APPROXIMATELY EQUAL TOTry it
≆ 8774 2246 APPROXIMATELY BUT NOT ACTUALLY EQUAL TOTry it
≇ 8775 2247 NEITHER APPROXIMATELY NOR ACTUALLY EQUAL TOTry it
≈ 8776 2248 ≈ ALMOST EQUAL TOTry it
≉ 8777 2249 NOT ALMOST EQUAL TOTry it
≊ 8778 224A ALMOST EQUAL OR EQUAL TOTry it
≋ 8779 224B TRIPLE TILDETry it
≌ 8780 224C ALL EQUAL TOTry it
≍ 8781 224D EQUIVALENT TOTry it
≎ 8782 224E GEOMETRICALLY EQUIVALENT TOTry it
≏ 8783 224F DIFFERENCE BETWEENTry it
≐ 8784 2250 APPROACHES THE LIMITTry it
≑ 8785 2251 GEOMETRICALLY EQUAL TOTry it
≒ 8786 2252 APPROXIMATELY EQUAL TO OR THE IMAGE OFTry it
≓ 8787 2253 IMAGE OF OR APPROXIMATELY EQUAL TOTry it
≔ 8788 2254 COLON EQUALSTry it
≕ 8789 2255 EQUALS COLONTry it
≖ 8790 2256 RING IN EQUAL TOTry it
≗ 8791 2257 RING EQUAL TOTry it
≘ 8792 2258 CORRESPONDS TOTry it
≙ 8793 2259 ESTIMATESTry it
≚ 8794 225A EQUIANGULAR TOTry it
≛ 8795 225B STAR EQUALSTry it
≜ 8796 225C DELTA EQUAL TOTry it
≝ 8797 225D EQUAL TO BY DEFINITIONTry it
≞ 8798 225E MEASURED BYTry it
≟ 8799 225F QUESTIONED EQUAL TOTry it
≠ 8800 2260 ≠ NOT EQUAL TOTry it
≡ 8801 2261 ≡ IDENTICAL TOTry it
≢ 8802 2262 NOT IDENTICAL TOTry it
≣ 8803 2263 STRICTLY EQUIVALENT TOTry it
≤ 8804 2264 ≤ LESS-THAN OR EQUAL TOTry it
≥ 8805 2265 ≥ GREATER-THAN OR EQUAL TOTry it
≦ 8806 2266 LESS-THAN OVER EQUAL TOTry it
≧ 8807 2267 GREATER-THAN OVER EQUAL TOTry it
≨ 8808 2268 LESS-THAN BUT NOT EQUAL TOTry it
≩ 8809 2269 GREATER-THAN BUT NOT EQUAL TOTry it
≪ 8810 226A MUCH LESS-THANTry it
≫ 8811 226B MUCH GREATER-THANTry it
≬ 8812 226C BETWEENTry it
≭ 8813 226D NOT EQUIVALENT TOTry it
≮ 8814 226E NOT LESS-THANTry it
≯ 8815 226F NOT GREATER-THANTry it
≰ 8816 2270 NEITHER LESS-THAN NOR EQUAL TOTry it
≱ 8817 2271 NEITHER GREATER-THAN NOR EQUAL TOTry it
≲ 8818 2272 LESS-THAN OR EQUIVALENT TOTry it
≳ 8819 2273 GREATER-THAN OR EQUIVALENT TOTry it
≴ 8820 2274 NEITHER LESS-THAN NOR EQUIVALENT TOTry it
≵ 8821 2275 NEITHER GREATER-THAN NOR EQUIVALENT TOTry it
≶ 8822 2276 LESS-THAN OR GREATER-THANTry it
≷ 8823 2277 GREATER-THAN OR LESS-THANTry it
≸ 8824 2278 NEITHER LESS-THAN NOR GREATER-THANTry it
≹ 8825 2279 NEITHER GREATER-THAN NOR LESS-THANTry it
≺ 8826 227A PRECEDESTry it
≻ 8827 227B SUCCEEDSTry it
≼ 8828 227C PRECEDES OR EQUAL TOTry it
≽ 8829 227D SUCCEEDS OR EQUAL TOTry it
≾ 8830 227E PRECEDES OR EQUIVALENT TOTry it
≿ 8831 227F SUCCEEDS OR EQUIVALENT TOTry it
⊀ 8832 2280 DOES NOT PRECEDETry it
⊁ 8833 2281 DOES NOT SUCCEEDTry it
⊂ 8834 2282 ⊂ SUBSET OFTry it
⊃ 8835 2283 ⊃ SUPERSET OFTry it
⊄ 8836 2284 ⊄ NOT A SUBSET OFTry it
⊅ 8837 2285 NOT A SUPERSET OFTry it
⊆ 8838 2286 ⊆ SUBSET OF OR EQUAL TOTry it
⊇ 8839 2287 ⊇ SUPERSET OF OR EQUAL TOTry it
⊈ 8840 2288 NEITHER A SUBSET OF NOR EQUAL TOTry it
⊉ 8841 2289 NEITHER A SUPERSET OF NOR EQUAL TOTry it
⊊ 8842 228A SUBSET OF WITH NOT EQUAL TOTry it
⊋ 8843 228B SUPERSET OF WITH NOT EQUAL TOTry it
⊌ 8844 228C MULTISETTry it
⊍ 8845 228D MULTISET MULTIPLICATIONTry it
⊎ 8846 228E MULTISET UNIONTry it
⊏ 8847 228F SQUARE IMAGE OFTry it
⊐ 8848 2290 SQUARE ORIGINAL OFTry it
⊑ 8849 2291 SQUARE IMAGE OF OR EQUAL TOTry it
⊒ 8850 2292 SQUARE ORIGINAL OF OR EQUAL TOTry it
⊓ 8851 2293 SQUARE CAPTry it
⊔ 8852 2294 SQUARE CUPTry it
⊕ 8853 2295 ⊕ CIRCLED PLUSTry it
⊖ 8854 2296 CIRCLED MINUSTry it
⊗ 8855 2297 ⊗ CIRCLED TIMESTry it
⊘ 8856 2298 CIRCLED DIVISION SLASHTry it
⊙ 8857 2299 CIRCLED DOT OPERATORTry it
⊚ 8858 229A CIRCLED RING OPERATORTry it
⊛ 8859 229B CIRCLED ASTERISK OPERATORTry it
⊜ 8860 229C CIRCLED EQUALSTry it
⊝ 8861 229D CIRCLED DASHTry it
⊞ 8862 229E SQUARED PLUSTry it
⊟ 8863 229F SQUARED MINUSTry it
⊠ 8864 22A0 SQUARED TIMESTry it
⊡ 8865 22A1 SQUARED DOT OPERATORTry it
⊢ 8866 22A2 RIGHT TACKTry it
⊣ 8867 22A3 LEFT TACKTry it
⊤ 8868 22A4 DOWN TACKTry it
⊥ 8869 22A5 ⊥ UP TACKTry it
⊦ 8870 22A6 ASSERTIONTry it
⊧ 8871 22A7 MODELSTry it
⊨ 8872 22A8 TRUETry it
⊩ 8873 22A9 FORCESTry it
⊪ 8874 22AA TRIPLE VERTICAL BAR RIGHT TURNSTILETry it
⊫ 8875 22AB DOUBLE VERTICAL BAR DOUBLE RIGHT TURNSTILETry it
⊬ 8876 22AC DOES NOT PROVETry it
⊭ 8877 22AD NOT TRUETry it
⊮ 8878 22AE DOES NOT FORCETry it
⊯ 8879 22AF NEGATED DOUBLE VERTICAL BAR DOUBLE RIGHT TURNSTILETry it
⊰ 8880 22B0 PRECEDES UNDER RELATIONTry it
⊱ 8881 22B1 SUCCEEDS UNDER RELATIONTry it
⊲ 8882 22B2 NORMAL SUBGROUP OFTry it
⊳ 8883 22B3 CONTAINS AS NORMAL SUBGROUPTry it
⊴ 8884 22B4 NORMAL SUBGROUP OF OR EQUAL TOTry it
⊵ 8885 22B5 CONTAINS AS NORMAL SUBGROUP OR EQUAL TOTry it
⊶ 8886 22B6 ORIGINAL OFTry it
⊷ 8887 22B7 IMAGE OFTry it
⊸ 8888 22B8 MULTIMAPTry it
⊹ 8889 22B9 HERMITIAN CONJUGATE MATRIXTry it
⊺ 8890 22BA INTERCALATETry it
⊻ 8891 22BB XORTry it
⊼ 8892 22BC NANDTry it
⊽ 8893 22BD NORTry it
⊾ 8894 22BE RIGHT ANGLE WITH ARCTry it
⊿ 8895 22BF RIGHT TRIANGLETry it
⋀ 8896 22C0 N-ARY LOGICAL ANDTry it
⋁ 8897 22C1 N-ARY LOGICAL ORTry it
⋂ 8898 22C2 N-ARY INTERSECTIONTry it
⋃ 8899 22C3 N-ARY UNIONTry it
⋄ 8900 22C4 DIAMOND OPERATORTry it
⋅ 8901 22C5 ⋅ DOT OPERATORTry it
⋆ 8902 22C6 STAR OPERATORTry it
⋇ 8903 22C7 DIVISION TIMESTry it
⋈ 8904 22C8 BOWTIETry it
⋉ 8905 22C9 LEFT NORMAL FACTOR SEMIDIRECT PRODUCTTry it
⋊ 8906 22CA RIGHT NORMAL FACTOR SEMIDIRECT PRODUCTTry it
⋋ 8907 22CB LEFT SEMIDIRECT PRODUCTTry it
⋌ 8908 22CC RIGHT SEMIDIRECT PRODUCTTry it
⋍ 8909 22CD REVERSED TILDE EQUALSTry it
⋎ 8910 22CE CURLY LOGICAL ORTry it
⋏ 8911 22CF CURLY LOGICAL ANDTry it
⋐ 8912 22D0 DOUBLE SUBSETTry it
⋑ 8913 22D1 DOUBLE SUPERSETTry it
⋒ 8914 22D2 DOUBLE INTERSECTIONTry it
⋓ 8915 22D3 DOUBLE UNIONTry it
⋔ 8916 22D4 PITCHFORKTry it
⋕ 8917 22D5 EQUAL AND PARALLEL TOTry it
⋖ 8918 22D6 LESS-THAN WITH DOTTry it
⋗ 8919 22D7 GREATER-THAN WITH DOTTry it
⋘ 8920 22D8 VERY MUCH LESS-THANTry it
⋙ 8921 22D9 VERY MUCH GREATER-THANTry it
⋚ 8922 22DA LESS-THAN EQUAL TO OR GREATER-THANTry it
⋛ 8923 22DB GREATER-THAN EQUAL TO OR LESS-THANTry it
⋜ 8924 22DC EQUAL TO OR LESS-THANTry it
⋝ 8925 22DD EQUAL TO OR GREATER-THANTry it
⋞ 8926 22DE EQUAL TO OR PRECEDESTry it
⋟ 8927 22DF EQUAL TO OR SUCCEEDSTry it
⋠ 8928 22E0 DOES NOT PRECEDE OR EQUALTry it
⋡ 8929 22E1 DOES NOT SUCCEED OR EQUALTry it
⋢ 8930 22E2 NOT SQUARE IMAGE OF OR EQUAL TOTry it
⋣ 8931 22E3 NOT SQUARE ORIGINAL OF OR EQUAL TOTry it
⋤ 8932 22E4 SQUARE IMAGE OF OR NOT EQUAL TOTry it
⋥ 8933 22E5 SQUARE ORIGINAL OF OR NOT EQUAL TOTry it
⋦ 8934 22E6 LESS-THAN BUT NOT EQUIVALENT TOTry it
⋧ 8935 22E7 GREATER-THAN BUT NOT EQUIVALENT TOTry it
⋨ 8936 22E8 PRECEDES BUT NOT EQUIVALENT TOTry it
⋩ 8937 22E9 SUCCEEDS BUT NOT EQUIVALENT TOTry it
⋪ 8938 22EA NOT NORMAL SUBGROUP OFTry it
⋫ 8939 22EB DOES NOT CONTAIN AS NORMAL SUBGROUPTry it
⋬ 8940 22EC NOT NORMAL SUBGROUP OF OR EQUAL TOTry it
⋭ 8941 22ED DOES NOT CONTAIN AS NORMAL SUBGROUP OR EQUALTry it
⋮ 8942 22EE VERTICAL ELLIPSISTry it
⋯ 8943 22EF MIDLINE HORIZONTAL ELLIPSISTry it
⋰ 8944 22F0 UP RIGHT DIAGONAL ELLIPSISTry it
⋱ 8945 22F1 DOWN RIGHT DIAGONAL ELLIPSISTry it
⋲ 8946 22F2 ELEMENT OF WITH LONG HORIZONTAL STROKETry it
⋳ 8947 22F3 ELEMENT OF WITH VERTICAL BAR AT END OF HORIZONTAL STROKETry it
⋴ 8948 22F4 SMALL ELEMENT OF WITH VERTICAL BAR AT END OF HORIZONTAL STROKETry it
⋵ 8949 22F5 ELEMENT OF WITH DOT ABOVETry it
⋶ 8950 22F6 ELEMENT OF WITH OVERBARTry it
⋷ 8951 22F7 SMALL ELEMENT OF WITH OVERBARTry it
⋸ 8952 22F8 ELEMENT OF WITH UNDERBARTry it
⋹ 8953 22F9 ELEMENT OF WITH TWO HORIZONTAL STROKESTry it
⋺ 8954 22FA CONTAINS WITH LONG HORIZONTAL STROKETry it
⋻ 8955 22FB CONTAINS WITH VERTICAL BAR AT END OF HORIZONTAL STROKETry it
⋼ 8956 22FC SMALL CONTAINS WITH VERTICAL BAR AT END OF HORIZONTAL STROKETry it
⋽ 8957 22FD CONTAINS WITH OVERBARTry it
⋾ 8958 22FE SMALL CONTAINS WITH OVERBARTry it
⋿ 8959 22FF Z NOTATION BAG MEMBERSHIP

Thanks Credit Reference www.w3schools.com

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