If they include variables, A = B is called an equation. I was taught that the statement A = B in which A and B is constant, fixed expressions, is called an equality or identity. In this particular case, there is only one value of x which does the job, namely x = 3. The request to solve x + 1 = 4 means to find the value (or values) of x, which x + 1 is equal to 4. For example, x + 1 = 4, depending of what x may stand for, may or may not be correct. If the expressions A and B are not constant, i.e., if they contain variables, then most often A = B means a request to find the values of the variables, for which A becomes equal to B. While 1 + 2 ≠ 4 is a correct statement, 1 + 1 ≠ 2 is not. But the meaning is just the opposite from "=". The same holds for the symbol "≠", not equal. While 1 + 1 = 2 is a correct statement, 1 + 2 = 4 is not. So, being equal, does not necessarily mean being the same.Īlso, the statement that involves the symbol "=" may or may not be correct. For example, 1 + 1 does not look like 2 but the definitions of the symbols 1, 2, +, and the rules of arithmetic tell us that 1 + 1 = 2. The symbol of equality "=" is used to make a statement that two differently looking expressions are in fact equal. The sign "=" of equality which is pronounced "equal to" has other, more fruitful uses. One can't go wrong with expressions like N = N because they do not say much. For example, for any number or expression N, N = N. If A and B are two constant expressions, we write A = B if they are equal, and A ≠ B, if they are not. For it seems, in almost every instance, and regardless of the source's unique definition of the symbol, each example was accompanied with the common definition of "Greater Than Sign" and / or "Less Than Sign".Less than, Equal to, Greater Than Symbols "most often we would hear it referred to as a 'greater than sign' or a 'less than sign' because in contemporary English Grammar the use of this symbol has fallen out of favor - but is used very widely in mathematical and algebraic expressions." (paraphrased) That lesson turned out to be very prophetic as it is more accurate now than it was then! Moreover, that prophecy was proved multiple times during the few hours and scores of websites & reference books upon which I relied to verify my memory. However, I must mention that even while being taught the appropriate name, the lesson came with a caveat. This is what I was taught to call it more than 40 years ago in school. I believe the proper name for the symbol in question is "Guillemet". ⫺ 2AFA DOUBLE-LINE SLANTED GREATER-THAN OR EQUAL TO ⫹ 2AF9 DOUBLE-LINE SLANTED LESS-THAN OR EQUAL TO ⪤ 2AA4 GREATER-THAN OVERLAPPING LESS-THAN ⪜ 2A9C DOUBLE-LINE SLANTED EQUAL TO OR GREATER-THAN ⪛ 2A9B DOUBLE-LINE SLANTED EQUAL TO OR LESS-THAN ❱ 2771 HEAVY RIGHT-POINTING ANGLE BRACKET ORNAMENT ❰ 2770 HEAVY LEFT-POINTING ANGLE BRACKET ORNAMENT ❯ 276F HEAVY RIGHT-POINTING ANGLE QUOTATION MARK ORNAMENT ❮ 276E HEAVY LEFT-POINTING ANGLE QUOTATION MARK ORNAMENT ❭ 276D MEDIUM RIGHT-POINTING ANGLE BRACKET ORNAMENT ❬ 276C MEDIUM LEFT-POINTING ANGLE BRACKET ORNAMENT X (mathematical left angle bracket - 27E8) X (single left-pointing angle quotation mark - 2039) ⋧ 22E7 GREATER-THAN BUT NOT EQUIVALENT TO ⋛ 22DB GREATER-THAN EQUAL TO OR LESS-THAN ⋚ 22DA LESS-THAN EQUAL TO OR GREATER-THAN X (right-pointing double angle quotation mark - 00BB) X (left-pointing double angle quotation mark - 00AB) › 203A SINGLE RIGHT-POINTING ANGLE QUOTATION MARK ‹ 2039 SINGLE LEFT-POINTING ANGLE QUOTATION MARK » 00BB RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK « 00AB LEFT-POINTING DOUBLE ANGLE QUOTATION MARK X (mathematical right angle bracket - 27E9) X (single right-pointing angle quotation mark - 203A) Mostly it comes down to one of the following four, with name assignments to numeric code points given as defined by the Unicode Standard, along with some of the more salient character properties like their general category and whether they are to be considered punctuation, a math character, and/or a type of quotation mark: In handwritten manuscripts and on primitive old-school typewriters there is no real difference, but in modern representations of actual characters and the fonts that use these, there is. It might be a less-than sign, an angle quotation mark, or an angle bracket. The answer depends on precisely which character you mean. You asked what the “technical name” is those technical names are given in bold below, although there are others less formal as well.
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