And which is male and which is female

Male pictograms of bows and arrows.

Female Pictogram of a mirror.

And are both mathematical logic symbols used to connect two simple propositions.

The meaning of is and is equivalent to the intersection in the set, the truth or falsity of the proposition p q is related to the truth or falsity of p and q, when p and q are all true propositions, the proposition p q is a true proposition, and everything else is a false proposition.

The meaning of is or is equivalent to the union in the set, and the truth or falsity of the proposition p q is also related to the truth or falsehood of p and q, when p and q are all false propositions, the proposition p q is a false proposition, and everything else is true proposition.

Extended information: with logic and multiplication.

In the principle of multiplication, the independent variable is a necessary condition for the establishment of the dependent variable, which is consistent with the definition of logic and the description of the principle of multiplication, so it corresponds to logic and multiplication.

or logic and addition.

In the addition principle, the independent variable is a sufficient condition for the dependent variable to be true, or the definition of logic is exactly the same as the description of the addition principle, so either logic and addition correspond.

Multiplication is generalized and logical operations, and addition is generalized or logical operations. Operations with logic can be seen as a special case of multiplication. Or logical operations can be seen as special cases of addition.

In short, the principle of multiplication, the principle of addition, can be seen as a quantitative formulation of logic and/or logic; OR logic can be seen as a qualitative formulation of the principle of multiplication, the principle of addition.

"Negative. "Merge.

Distraction. These are all logical connectives, which appear in general mathematical logic or metamath books. These symbols are used to connect two propositions (negation is not).

Negation + proposition, which means that the negation of proposition 1 + conjunctions + proposition 2, means that both propositions are valid at the same time. Proposition 1 + disjunctive + proposition 2 means that at least one of the two propositions is true.

Summary. The Chinese translation of CPI data is the consumer price index, which is an index of price changes in the entire society. If the CPI data of this index is greater than 1, then it means that the entire society belongs to an upward channel and a value of inflation.

>A certain amount, let's say >%. Let's just say it's inflationary. If it is less than 0, it means that the price of our whole society is in a downward channel.

Then there is a good chance that it will trigger our inflation tightening.

What does pp and cp mean.

The Chinese translation of CPI data is the consumer price index, which is an index of price changes in the entire society. If the CPI data of this index is greater than 1, then it means that the entire society belongs to an upward channel and a value of inflation. >A certain amount, let's say >%.

Let's just say it's inflationary. If it is less than 0, it means that the price of our whole society is in a downward channel. Then there is a good chance that it will trigger our inflation tightening.

PPI is the factory factory ** index, what is the difference between CPI and CPI? You can think of CPI as counting the retail price, while PPI is counting the ex-factory wholesale price. Its statistical method is similar to that of CPI, except that the investigator does not need to go to the store, but directly goes to the representative enterprises to understand the **.

Generally speaking, the role of CPI and PPI is to see the general trend of purchasing power appreciation and depreciation, because their statistical objects are different, so PPI is the leading indicator of CPI to a certain extent.

It's a feminine symbol, it's a masculine symbol.

<> is a substitute symbol for the legendary goddess of love and goddess, representing the male and the female. In astronomy, it also means Mars and is the symbol of Mars. Botanists also borrow these two symbols to represent the plant hermaphroditic flower.

One theory is that the goddess of love, Cupe Cong Sitt, had a bow and quiver shaped like " "It is also said that the spear and shield of the god of war (mars), and the goddess Venus loved beauty and often held a small mirror to resemble it" "People used these two symbols as code names for the goddess of love and the goddess, and later they were almost used to refer to male and female respectively.

Evolution of meaning: 1) Stars.

Ancient Roman scholars began to observe the stars very early, and they associated a number of different celestial bodies with their gods and named them after them. Mars is named after the god of war, Mars, and Venus is named after the goddess Venus. Similarly, the Mars symbol and the Venus symbol are also used to represent Mars and Venus.

2) Metals. In ancient European knowledge systems, celestial bodies were often associated with different specific metals. For example, the Sun is associated with gold, Mars is associated with iron, and Venus is associated with copper.

During the Middle Ages, European alchemists also began to use symbols corresponding to celestial bodies to represent metals due to the shorthand nature of symbols. On behalf of iron, on behalf of copper.

3) Plants. In the eighteenth century, the Swedish natural scientist Carl von Linné (the father of modern plant taxonomy) also used the symbol in his 1735 book "Natural Systems". He is used to represent the male parent of the mixed plant, and it is used to represent the female parent of the mixed plant.

Later, in his 1751 book "Interspecific Hybrid Plants", Linnaeus went on to use these two symbols: male flowers and female flowers.

Alpha and beta are mainly used in the field of mathematics, physics for the representation of variables, physical quantities, etc. , is two Greek letters, generally represents the angle of the letter, just like we find the unknown with x, y, the angle is represented by , in common math problems, , is three Greek letters, generally represent the angle of the letter.

Relevant triviaAlpha, Beta, Gamma and Delta are all Greek letters, the Greek alphabet is the alphabet used in the Greek language, and is also widely used in mathematics, physics, biology, chemistry, astronomy and other disciplines, the Greek alphabet is similar to the English alphabet and the Russian alphabet, but the symbols are different, and the nature of the phonetic is the same.

The Greek alphabet is the world's first vowel alphabet, and the Cyrillic and Georgian alphabets used in Russian, Ukrainian, etc. are all developed from the Greek alphabet, and those who have studied Russian will feel familiar when using the Greek alphabet. The Greek alphabet has found its way into the vocabulary of many languages.

h is a chemical reaction.

Enthalpy change, enthalpy is a thermodynamic energy state function of an object, and enthalpy change is the amount of change in the enthalpy of the object.

The physical meaning of h q enthalpy of h u pv under the condition of doing only volume work can be understood as the special condition of constant pressure and only volume work, q = δh, that is, the heat change of the reaction. Because it is only under this condition that enthalpy exhibits its properties. For example, if a substance is heated at constant pressure, the temperature of the substance increases after heat absorption, δH0, so the enthalpy of the substance at high temperature is greater than its enthalpy at low temperature.

For example, for an exothermic chemical reaction at constant pressure, δH<0, so the enthalpy of the product is less than the enthalpy of the reactant.

In chemical reactions, since h is a function of state, δh has a definite value only when the state of the product and reactant is determined.

When a chemical reaction occurs, the energy must first be absorbed to make the chemical bonds of the reactants.

Destruction, a process that requires the absorption of reactant bond energy as much energy. New chemical bonds are then formed, and this process releases energy, which is the bond energy of the product.

So when h is less than 0, it is an exothermic process and the absorbed energy is less than the energy released.

On the contrary, if h is greater than 0, it is an endothermic process.