What is the logical reasoning structure and what is logical reasoning

The logical reasoning structure is based on assumptions, that is, one of them is assumed to lie (or he is telling the truth), and then inferred from the topic, and if there is a contradiction, the assumption is wrong, and vice versa, the assumption is correct.

It is the overall structure of A launching B or B launching A.

Logic usually refers to the laws by which people think about problems and arrive at reasonable conclusions based on certain known conditions.

To say that someone is logical means that he is good at reasoning and is able to draw correct conclusions. To say that someone is speaking illogically means that he is reasoning incorrectly and has come to the wrong conclusion.

Logic also sometimes refers to logic.

Logic is the study of the laws of reasoning. Logic credits: Classical Logic and Modern Logic.

Logic also has deductive logic, inductive logic, and formal logic.

different types such as non-formal logic.

Logic. The known conditions and conclusions in are propositions that can be judged to be true or false. If we take proposition as the most basic component and only study the laws of propositional reasoning, we will get propositional logic. Further, the proposition is subdivided into predicates, and the quantifier obtains predicate logic.

Use symbols to represent propositions, predicates, quantifiers, and get symbolic logic.

Symbolic logic is often used to study reasoning in mathematics, so it is also called mathematical logic.

In the twentieth century, mathematical logic developed rapidly, and it had four main branches: set theory.

Model theory, recursive theory, and proof theory have become important disciplines in mathematics. Modern logics such as modal logic, temporal logic, probabilistic logic, quantum logic, fuzzy logic and other application logics emerge in an endless stream.

In this way, the meaning of logic is too rich. Logic has become mathematics, philosophy, computer science.

and even the foundation of each discipline.

Logic. That is, deductive reasoning is the process of starting from a general premise and deriving a specific statement or individual conclusion through deduction, that is, "deduction". The importance of the logical form of deductive reasoning to rationality lies in the fact that it has an irreplaceable corrective effect on the rigor and consistency of human thinking.

Logical reasoning includes three methods: deductive, inductive, and retrospective.

Basic definitions. The so-called deductive reasoning is the process of starting from a general premise and deriving a specific statement or individual conclusion through deduction, that is, "deduction". There are also several definitions of deductive reasoning:

Deductive reasoning is reasoning from the general to the particular;

It is the reasoning that the premise implies the conclusion;

It is reasoning that has a necessary connection between the premise and the conclusion.

Deductive reasoning is when there is a sufficient condition or sufficient necessary condition between the premise and the conclusion.

The inevitability reasoning of the connection.

The importance of the logical form of deductive reasoning to rationality lies in the fact that it has an irreplaceable corrective effect on the rigor and consistency of human thinking. This is because deductive reasoning guarantees that reasoning is valid not on the basis of its content, but on its form. The most typical and important applications of deductive reasoning are usually found in logical and mathematical proofs.

Forms of reasoning. There are syllogisms in deductive reasoning.

Forms of selective reasoning, hypothetical reasoning, relational reasoning, etc.

Sugar tastes sweet, and watermelon contains sugar, so eating watermelon feels sweet. This is Luo Ji.

The simplest syllogism in reasoning. It consists of three parts: the major premise, the minor premise, and the conclusion.

Generally, there are the following definitions: 1. Deductive reasoning is from general to special reasoning;

2. It is the reasoning of the conclusion implied by the premise;

3. It is an inference that has a necessary connection between the premise and the conclusion;

4. Deductive reasoning is the reasoning of necessity that has sufficient conditions or sufficient necessary conditions between the premise and the conclusion.

In daily life, some problems often require us to arrive at correct conclusions mainly through analysis and reasoning, rather than calculation, and this kind of judgment and reasoning problem is called logical reasoning problem, referred to as logical problem

The basic methods to solve the problem of logical reasoning are "** method", "hypothetical method" and "elimination method" It is necessary to sort out the relationship between the parts from the given conditions, and then analyze and reason, eliminate some impossible situations, and gradually summarize to find the correct answer

There are three types of logical reasoning problems: conditional analysis, true or false judgment, and analytical computation

The structure of reasoning means that reasoning is composed of two parts: premises and conclusions; Any reasoning is to arrange the premises and conclusions into a certain form of reasoning according to certain reasoning rules. This is the formal structure of reasoning.

For example, the overall structure of syllogism reasoning is:

The big premise is the small premise.

Conclusions, but the major premise, minor premise, and conclusion can all be played by four propositions, A, E, I, and O, respectively, which constitute 256 specific syllogisms of reasoning. Among the many forms of reasoning, there are many valid forms and many invalid forms.

The formal structure of various inferences is different, and the above is just an example of a syllogism.

The derivation of the correlation of consciousness in different orders is logical reasoning. Logical reasoning means that when human beings hear something stated by others, the brain begins to go through complex signal processing and filtering, and then the language basis learned by experience is used to process and judge the language to find out the correct event logic.

1.Drawing method.

While reading the question, use arrows, talisman source numbers, and charts to simplify the reasoning relationship and clarify the main line of logic, so as to quickly find a breakthrough in solving the problem. dao2.Substitution of exclusions.

Substitute the known conditions in the question stem into the four options in turn, and eliminate three of the four selections one by one to find one.

3.Law of Contradictions.

If we first grasp the two items that are directly contradictory, then one of them must be true, and one is true and three false, and the other two must be false.

4.Other methods: abstract symbolic method, argumentative argument method.

Friends, there are three kinds of logical reasoning, which are classified as follows:

One. Deductive Reasoning:

1.Non-modal inference: simple judgment reasoning (property right judgment reasoning and relational judgment reasoning); Compound Judgment Reasoning (Conjunctive Reasoning; Selective reasoning; Hypothetical reasoning and negative judgment equivalence reasoning).

2.Modal Reasoning: Modal Correlation Reasoning; Reasoning for modal judgment and non-modal judgment II. Inductive Reasoning:

1.Completely inductive.

2.Incomplete induction: simple enumeration and scientific induction.

Three. Reasoning by analogy.