What does the plus sign mean?

The plus sign means: the symbol of addition.

The addition symbol is a mathematical symbol used to represent a positive number or an addition. This symbol is also endowed with rich abstract meaning because of its similarity with other things. Addition and subtraction are the two earliest mathematical operations mastered by human beings, which are recorded in the earliest written records of human beings.

Ammers papyrus in ancient Egypt contains symbols of addition and subtraction: two legs "go right" is a plus sign, and two legs "go left" is a minus sign. The latter means "square" in Moscow papyrus.

In ancient China, due to the emphasis on calculation with tools, general operations were carried out on calculations or abacus, and only the results were recorded. Therefore, mathematical symbols are not used, and the operation is expressed in words when recording.

Network application of plus sign:

1, use "+"to indicate refueling, otherwise use negative sign to indicate invalid.

2. In online games, players need to team up when challenging boss or difficult levels or complex tasks. There are often many people at this time, so it will be a waste of time and trouble to type and shout "add me" directly. So a symbol with only "+"was born instead. It's quick and easy.

3. In online games, especially in FPS and TPS games, "+"is used to indicate "home" or "birth point".

4. For example, "2nd floor+1" means "I have the same vision as the 2nd floor". Similarly, you can copy and paste other people's speeches into your own speech area, followed by "+1" to express the same point of view. For example, if the second floor says "the landlord has Mars", people downstairs can reply "the landlord has Mars+1", indicating that they agree with the second floor.

If the reply "+1" has appeared upstairs, you can choose "+2" and "+3" as appropriate to express your views (of course, you can continue to use "+1"). Write a big number after the plus sign to show that you agree with someone's point of view, such as "2nd floor +65535".

5. There is also the meaning of "above", for example, "20+J", "20+"means above grade 20, and "100+ people" means 100 people or more.