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2. Table of mathematical symbols by introduction date - Wikipedia

   en.wikipedia.org/wiki/Table_of_mathematical...

   unstrict inequality signs (less-than or equals to sign and greater-than or equals to sign) 1670 (with the horizontal bar over the inequality sign, rather than below it) John Wallis: 1734 (with double horizontal bar below the inequality sign) Pierre Bouguer

3. Number sentence - Wikipedia

   en.wikipedia.org/wiki/Number_sentence

   A valid number sentence using a 'less than' symbol: 3 + 6 < 10. A valid number sentence using a 'more than' symbol: 3 + 9 > 11. An example from a lesson plan: [6] Some students will use a direct computational approach. They will carry out the addition 26 + 39 = 65, put 65 = 26 + , and then find that = 39.

4. Glossary of mathematical symbols - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_mathematical...

   A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various types, many symbols are needed for ...

5. Inequality (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Inequality_(mathematics)

   The relation not greater than can also be represented by , the symbol for "greater than" bisected by a slash, "not". The same is true for not less than , a ≮ b . {\displaystyle a\nless b.} The notation a ≠ b means that a is not equal to b ; this inequation sometimes is considered a form of strict inequality. [ 4 ]

6. FDA sets limits on lead in some baby foods - AOL

   www.aol.com/fda-sets-limits-lead-baby-210654868.html

   The FDA guidance caps lead levels for children younger than 2 at 10 parts per billion for fruits, most vegetables, grain and meat mixtures, yogurts, custards and puddings, and single-ingredient meats.

7. Social media star documents Tiptoe the 175-pound tortoise's ...

   www.aol.com/news/social-media-star-documents...

   Tiptoe, a 175-pound tortoise famous on social media, and his owner documented fleeing the Palisades Fire on Tuesday.