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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. 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 ...

4. Degeneracy (graph theory) - Wikipedia

   en.wikipedia.org/wiki/Degeneracy_(graph_theory)

   The two concepts of coloring number and degeneracy are equivalent: in any finite graph the degeneracy is just one less than the coloring number. [10] For, if a graph has an ordering with coloring number κ then in each subgraph H the vertex that belongs to H and is last in the ordering has at most κ − 1 neighbors in H.

5. Plus and minus signs - Wikipedia

   en.wikipedia.org/wiki/Plus_and_minus_signs

   The plus sign (+) and the minus sign (−) are mathematical symbols used to denote positive and negative functions, respectively. In addition, + represents the operation of addition, which results in a sum, while − represents subtraction, resulting in a difference. [1] Their use has been extended to many other meanings, more or less analogous.

6. Mathematical Operators (Unicode block) - Wikipedia

   en.wikipedia.org/wiki/Mathematical_Operators...

   Mathematical Operators is a Unicode block containing characters for mathematical, logical, and set notation.. Notably absent are the plus sign (+), greater than sign (>) and less than sign (<), due to them already appearing in the Basic Latin Unicode block, and the plus-or-minus sign (±), multiplication sign (×) and obelus (÷), due to them already appearing in the Latin-1 Supplement block ...

7. 9 luxurious status symbols you might be tempted to buy in 2025

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   This year, however, $600 calendars and stained-glass lamps have become the new status symbols. Giant tote bags from Coach and oval-shaped Miu Miu glasses also signify luxury and taste in 2025.

8. Woman Paralyzed by Falling Tree Can Move Again Thanks to ...

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   800-290-4726 more ways to reach us. Mail. Sign in. ... As Owen explained: “It [used to] take me 30 minutes to get dressed. ... Never miss a story — sign up for PEOPLE's free daily newsletter ...

9. Should kids in a family get the same amount of holiday gifts ...

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   “All these little kids, like young kids, 7,8, 9, are into skincare and stuff. But we don’t have that in my house,” Hoda said during a recent appearance on Late Night with Seth Meyers ...