How can I get to the science and education center
with the recent increase in currency popularity and the national demand for the development of blockchain technology, more and more instries have poured into the blockchain instry many companies in the securities market own blockchain stocks, and they all use the name of blockchain to provide a gold institution for face-to-face action. In the early stage of blockchain, because there were basically no professional investment institutions, the project parties often used the strength of the community to raise funds, and ordinary people also had the opportunity{ RRRRR}
some people say that blockchain is an opportunity for ordinary people to get rich. The current blockchain circle can actually bring opportunities to the public as long as you participate, there will be opportunities. There are many free project platforms in the blockchain instry. You can get some tokens for free, but if you add value, you will make money. Blockchain currency circle also needs to have advanced awareness and insight, so that it can be challenging and courageous to conct in-depth research, learn its expertise and learn the model rules of various platforms. You can benefit from the instry
In logic, proposition a stands for: all affirmative propositions, that is, all s are p
The proposition ofe stands for: all negative propositions, that is, all s are not P
The proposition ofI represents: it is specially called affirmative proposition, and some s is p
The proposition ofO stands for: special negative proposition, some s are not P
there is the following true false relationship among a, e, I and O of the same material:
1. Contradictory relationship. Division exists between a and 0, e and I, and there are two contradictory judgments, that is, they cannot be true or false
2. It exists between a and E. Two judgments with opposition relationship can not be true, but can be false
3. Exists between I and 0. Two judgments with lower opposition relation can not be the same as false, but can be the same as true
4. It exists between a and I, e and 0 respectively. There are two kinds of judgment with difference relation, one is full name judgment, the other is special name judgment
There is the following true false relationship between the two judgments with difference relation: if the full judgment is true, then the special judgment is also true; If the full name judgment is false, the special name judgment is uncertain; If the special judgment is true, the full judgment is uncertain; If the special judgment is false, the full judgment is also false 
extended data:
formal logic is also called ordinary logic. The science of thinking form and its law. It is a kind of instrumental science and a necessary logical tool that people often use when they know things and express their thoughts. In order to reflect the objective world in the rational stage of human cognition, it is necessary to realize the unity of thinking content and thinking form, otherwise, this reflection cannot be realized
the content of thinking is the object and its attribute reflected by thinking, and the form is the way to reflect a certain object, that is, the concept expressed by words, the judgment expressed by sentences and the reasoning expressed by complex sentences
any concrete thinking has its content as well as its form. Any specific thinking involves some specific objects. For example, specific thinking in mathematics involves specific objects such as quantity and figure; Specific thinking in physics involves specific objects such as sound, light, electricity and force; The specific thinking in political economy involves such specific objects as relations of proction, commodities and values. The specific thinking objects in different fields are different
However, there are some common factors in the specific thinking of different fields. For example, the thinking factors of "all... Are..." "and" if... Then... "Should be applied in specific thinking in different fields the common thinking factor that concrete thinking in different fields needs to be applied is the form of concrete thinking, or the form of thinking. The special objects involved in specific thinking in different fields are the content of specific thinking, or the content of thinking< strong>