Mathematics Flashcards

1
Q

What is pie?

A

Circ/diam

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2
Q

Galileo quote

A

“The book of nature is written in the language of mathematics”

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3
Q

“This is one of the greatest events of my life, as dazzling as my first love. I had not imagined that there was anything so delicious in this world”

A

Bertrand Russell

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4
Q

Math

A

The science of rigorous proof; deductive reasoning used to derive theorems

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5
Q

Axioms

A

Starting points or basic assumptions believed to be true without proof

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6
Q

Euclid’s 5 Axioms

A
  1. It shall be possible to draw a straight line to join any two points 2. A finite line may be extended without the limit in either direction3. It shall be possible to draw a circle with a given center and through a given point 4. All right angles are equal to one another5. There is just one straight line through a given point which is parallel to a given line
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7
Q

Proof

A

A theorem is shown to follow logically the relevant axioms

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8
Q

Conjecture

A

A hypothesis that seems to work, but has not been shown to necessarily be true

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9
Q

Goldbach’s conjecture

A

Every number is the sum of two primes

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10
Q

Henri Pointcaré

A

Stressed the role of intuition

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11
Q

Analytic proposition

A

True by definition

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12
Q

Synthetic proposition

A

Any proposition that is not analytic

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13
Q

Math options

A

Option 1: math is empiricalOption 2: math is analyticOption 3: math as synthetic a priori

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14
Q

Euclidean geometry

A

Self evident, though to be true

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15
Q

Baruch Spinoza

A

Write a book of ethics based on a series of theorems

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16
Q

Empiricism

A

Mathematical truths are empirical generalizations

17
Q

Formalism

A

Mathematical truth are true by definition Math is invented, only existing in our minds

18
Q

Platonism

A

Mathematical truths give us a priori insight into the structure of realityPlatonists believe math is discovered and exists “out there” “ideal”

19
Q

Mental fictions

A

Only exist in our minds

20
Q

Plato’s solution

A

Mathematical objects exist “out there” but in a unique form of existence

21
Q

Non-Euclidean geometry

A

Georg f b Riemann Replaced Euclid’s axioms with their contraries Two points may determine more than one lineAll lines are finite in length but endlessThere are no parallel lines

22
Q

Riemannian geometry axioms

A

All perpendiculars to a straight line meet at one pointTwo straight lines enclose an areaThe sum of the angles of any triangle are greater than 180 degrees Never proved system was free from contradiction = problem of consistency

23
Q

Gödel’s incompleteness theorem

A

It is impossible to prove mathematics free of contradiction Kurt gödel

24
Q

Mathematical truths are either

A

EmpiricalTrue by definitionRational insights to universal truths

25
Q

Analytic

A

(Def) Characterized by the use of separate words

26
Q

A posteriori

A

Effect -> causeBased on observation or experience

27
Q

A priori

A

Cause -> effectGeneral rule to a particular caseIndependent from experience

28
Q

Axioms

A

Statements taken to be true without proof

29
Q

Conjecture

A

A conclusion reached by guessing

30
Q

Deduction

A

Reasoning, inferenceAct of taking away, subtracting

31
Q

Empiricism

A

The use of methods based on experiment and observation

32
Q

Idealization

A

Belief that only mental entities are real

33
Q

Theorem

A

A statement that is to be proved or has been proven

34
Q

What are the four main characteristics of axioms?

A
  1. consistent – something is what it is and is not what it is not!
  2. independent – smallest number possible
  3. simple – accepted without further proof
  4. fruitful – enable proof of theorems