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S_A_V [24]
2 years ago
6

Subject is science again

History
2 answers:
Aleonysh [2.5K]2 years ago
6 0

The answer is the annular eclipse
Ghella [55]2 years ago
6 0

Answer: Annular Eclipse

Explanation:

Science Basics

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1 plus 1 is 2 very easy
Bumek [7]

Answer:

indeed it is

Explanation:

Whitehead and Russell's Principia Mathematica is famous for taking a thousand pages to prove that 1+1=2. Of course, it proves a lot of other stuff, too. If they had wanted to prove only that 1+1=2, it would probably have taken only half as much space.

Principia Mathematica is an odd book, worth looking into from a historical point of view as well as a mathematical one. It was written around 1910, and mathematical logic was still then in its infancy, fresh from the transformation worked on it by Peano and Frege. The notation is somewhat obscure, because mathematical notation has evolved substantially since then. And many of the simple techniques that we now take for granted are absent. Like a poorly-written computer program, a lot of Principia Mathematica's bulk is repeated code, separate sections that say essentially the same things, because the authors haven't yet learned the techniques that would allow the sections to be combined into one.

For example, section ∗22, "Calculus of Classes", begins by defining the subset relation (∗22.01), and the operations of set union and set intersection (∗22.02 and .03), the complement of a set (∗22.04), and the difference of two sets (∗22.05). It then proves the commutativity and associativity of set union and set intersection (∗22.51, .52, .57, and .7), various properties like α∩α=α" role="presentation" style="display: inline; font-style: normal; font-weight: normal; line-height: normal; font-size: 16px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;">α∩α=αα∩α=α (∗22.5) and the like, working up to theorems like ∗22.92: α⊂β→α∪(β−α)" role="presentation" style="display: inline; font-style: normal; font-weight: normal; line-height: normal; font-size: 16px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;">α⊂β→α∪(β−α)α⊂β→α∪(β−α).

Section ∗23 is "Calculus of Relations" and begins in almost exactly the same way, defining the subrelation relation (∗23.01), and the operations of relational union and intersection (∗23.02 and .03), the complement of a relation (∗23.04), and the difference of two relations (∗23.05). It later proves the commutativity and associativity of relational union and intersection (∗23.51, .52, .57, and .7), various properties like α∩˙α=α" role="presentation" style="display: inline; font-style: normal; font-weight: normal; line-height: normal; font-size: 16px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;">α∩˙α=αα∩˙α=α (∗22.5) and the like, working up to theorems like ∗23.92: α⊂˙β→α∪˙(β−˙α)" role="presentation" style="display: inline; font-style: normal; font-weight: normal; line-height: normal; font-size: 16px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;">α⊂˙β→α∪˙(β−˙α)α⊂˙β→α∪˙(β−˙α.

4 0
2 years ago
In 1821, the opening of the Santa Fe Trail between Santa Fe and ________ led to a reorientation of New Mexico’s commerce from th
Nadya [2.5K]

Answer:

Missouri is the correct answer.

Explanation:

Santa Fe trail was a transportation route which was famous in 19 th century, it linked Santa Fe, New Mexico with Independence, Missouri. It was discovered by William Becknell. It was a major highway until the railroads were introduced to Santa Fe in 1880 and when US came to acquire the South west after the Mexican-American War, trail helped in the new settlements in the region and helped in US expansion. It served as an important commercial highway, the highway was also used during Mexican-American war to  invade attack mexico.

5 0
3 years ago
During the summer of 1967, one hundred fifty riots occurred to protest.
Romashka-Z-Leto [24]

they protested for more money and more jobs

3 0
2 years ago
How did cataracts in the nile river make transportation difficult
matrenka [14]
Cataracts caused parts of the riverbed today out. 
3 0
3 years ago
Read 2 more answers
Why does the constitution stop people from lying?
kodGreya [7K]

Answer:

I did a bit of research, and basically its in the power of the goverment.

Explanation:

7 0
3 years ago
Read 2 more answers
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