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
Analytic
(Def) Characterized by the use of separate words
26
A posteriori
Effect -> causeBased on observation or experience
27
A priori
Cause -> effectGeneral rule to a particular caseIndependent from experience
28
Axioms
Statements taken to be true without proof
29
Conjecture
A conclusion reached by guessing
30
Deduction
Reasoning, inferenceAct of taking away, subtracting
31
Empiricism
The use of methods based on experiment and observation
32
Idealization
Belief that only mental entities are real
33
Theorem
A statement that is to be proved or has been proven
34
What are the four main characteristics of axioms?
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