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John Gabriel

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How is this at all fascinating? It's mind-numbing junk. A mediant makes zero sense unless any two given fractions are in proportion Bk V. Prop. 12 (The Elements).

Stern-Brocot trees are garbage. No offense to Wildberger please!

Moreover, the vinculum as used in 1/0 is illogical and anti-mathematical rot. There is no number k, such that k x 0 = 1. But this is true for every VALID fraction. That is, 3/4 means that the unit has been divided into 4 equal parts say k each, so that 4 x k = 1 and the 3 denotes how many of those parts are being considered.

Algebraically, NOTHING happens when the numerator is less than the denominator, that is, we toss the dots away from the obelus  -:-  to get the vinculum (horizontal line) and then place the numerator on top of vinculum and denominator on bottom of vinculum. Geometrically, a lot happens because we can divide ANY line segment into ANY number of equal parts we like using only a compass and a straight edge.

Thus, 1/0 is invalid and no fraction or number at all. It is a nonsense concept.

Google john gabriel new calculus to read more. Also check out my posts at LinkedIn.
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John Gabriel

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It's not correct to think about numbers as either a "choice" or an "algorithm".

No valid construction of irrational numbers proved here:

http://www.spacetimeandtheuniverse.com/math/4507-0-999-equal-one-317.html#post21409
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John Gabriel

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Finally one can understand exactly what is an arithmetic mean in my video at: http://youtu.be/_RLRMGFBZBs

You can download the Geogebra applet here from Google Drive:

https://drive.google.com/open?id=0B-mOEooW03iLQjN3WnVKLURjOFE&authuser=0

Before me, no one ever understood what it means to be an arithmetic mean. That's a big statement, but it's true.


Learn more about me at: http://thenewcalculus.weebly.com


Also follow me on Space Time and The Universe:


http://www.spacetimeandtheuniverse.com/math/4507-0-999-equal-one-317.html#post21409



What is a quotient? What is an obelus?


13 -:- 5  and   13/5  do NOT mean the same thing at all.

The obelus, that is, -:- , means repeated subtraction and only applies when the numerator > denominator. As far as a proper fraction is concerned, true division is only possible using geometry. In algebra, the statement 1 -:- 3 is a NO OPERATION.  The 1 dots are discarded, the 1 goes to the top of the vinculum (horizontal bar or slash) and the 3 to the bottom of the vinculum. No repeated subtraction of any kind takes place.

Here is the definition of quotient that works for ALL numbers:

The quotient (or division) of two positive numbers is that positive number, that measures either positive number in terms of the other. 

Let the numbers be 2 and 3. 

2/3+2/3+2/3 = 6/3 = (6-2-2)/(3-1-1) = 2/1 = 2 

3/2+3/2=6/2= (6-3)/(2-1)= 3/1 = 3 

In order to understand what it means to be a quotient, you first need to understand what it means to be a "number".

For this, you must be able to derive the number concept from scratch in 5 easy steps, as demonstrated in the axioms of magnitude:

The Gabrielean Axioms of Magnitude: 

1. A magnitude is the concept of size, dimension or extent. 

2. The comparison of any two magnitudes is called a ratio. 

3. A ratio of two equal magnitudes is called a unit. 

4. A magnitude  x  that is measurable by a unit magnitude  u, is a natural number in the ratio  x:u or a proper fraction in the ratio  u:x. 

5. If any magnitude or ratio of magnitudes cannot be completely measured, that is, they have no common measure, not even the unit,  then it is called an incommensurable magnitude or ratio of magnitudes. 

Now you can formally state the axioms of arithmetic:

The Gabrielean Axioms of Arithmetic: 

1. The difference (or subtraction) of two numbers is that number which describes how  much the larger exceeds the smaller. 

2. The difference of equal numbers is zero. 

3. The sum (or addition) of two numbers is that number whose difference with either of the two numbers is the other number. 

4. The quotient (or division) of two numbers is that number that measures either number in terms of the other. 

5. If a unit is divided by a number into equal parts, then each of these parts of a unit, is called the reciprocal of that number. 

6. Division by zero is undefined, because 0 does not measure any number. 

7. The product (or multiplication) of two numbers is the quotient of either number with the reciprocal of the other. 

8. The difference of any number and zero is the number. 

Observe that all the basic arithmetic operations are defined in terms of difference. 

Gabrielean Axioms of arithmetic explained: 

1. The difference (or subtraction) of two positive numbers, is that positive number which describes how much the larger number exceeds the smaller. 

Let the numbers be 1 and 4. 

4 - 1 = 3 or |1 - 4| = 3 

2. The difference of equal numbers is zero. 

Let the numbers be k and k. 

|k - k| = 0 

3. The sum (or addition) of two given positive numbers, is that positive number whose difference with either of the two given numbers produces the other number. 

Let the numbers be 1 and 4. 

1 + 4 = 5 because 5 - 4 = 1 and 5 - 1 = 4 

4. The quotient (or division) of two positive numbers is that positive number, that measures either positive number in terms of the other. 

Let the numbers be 2 and 3. 

2/3+2/3+2/3 = 6/3 = (6-2-2)/(3-1-1) = 2/1 = 2 

3/2+3/2=6/2= (6-3)/(2-1)= 3/1 = 3 

5. If a unit is divided by a positive number into equal parts, then each of these parts of a unit, is called the reciprocal of that positive number. 

Let the positive number be 4. 

The reciprocal is 1/4 and 1/4+1/4+1/4+1/4 = 1 

6. Division by zero is undefined, because 0 does not measure any magnitude. 

Since the consequent number is always the sum of equal parts of a unit, it follows clearly that no such number exists that when summed can produce 1, that is, no matter how many zeroes you add, you never get 1. 

7. The product (or multiplication) of two positive numbers is the quotient of either positive number with the reciprocal of the other. 

Let the numbers be 2 and 3. 

1/2+1/2+1/2+1/2+1/2+1/2=3 

1/3+1/3+1/3+1/3+1/3+1/3=2 

8. The difference of any number and zero is the number. 

Let the number be k. 

|k-0|=|0-k| 

Observe that all the basic arithmetic operations are defined in terms of the primitive operator called difference. 

These are the true axioms of arithmetic and the definition of the arithmetic operators. 

Axioms for negative numbers are easy to define with some trivial modification. 
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John Gabriel

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If you want to understand exactly what is an arithmetic mean, then you can do it in less than 3 minutes here:  http://www.youtube.com/watch?v=_RLRMGFBZBs

This is one of the most important concepts in mathematics and the least understood right after that of the number concept.

Also check out the entire article at: http://www.linkedin.com/pulse/arithmetic-mean-john-gabriel
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John Gabriel

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Proof that no valid construction of irrational numbers exists:

http://www.spacetimeandtheuniverse.com/math/4507-0-999-equal-one-317.html


I like Wildberger. 


I too am called a crank. If you are not part of that group called mainstreamers, you are a delusional crank. Well, I'll drink to that! :-)


http://thenewcalculus.weebly.com
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+njwildberger And by facts, I am certain you do not mean  "Valid construction of the real numbers" because there is none. Is this correct?  A simple 'yes' or 'no' response will do. :-)

As for the "broad picture of modern mythmatics", why should it be preserved? 
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John Gabriel

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No. 13 -:- 5  and   13/5  do NOT mean the same thing at all.

The obelus, that is, -:- , means repeated subtraction and only applies when the numerator > denominator. As far as a proper fraction is concerned, true division is only possible using geometry. In algebra, the statement 1 -:- 3 is a NO OPERATION.  The 1 dots are discarded, the 1 goes to the top of the vinculum (horizontal bar or slash) and the 3 to the bottom of the vinculum. No repeated subtraction of any kind takes place.

Here is the definition of quotient that works for ALL numbers:

The quotient (or division) of two positive numbers is that positive number, that measures either positive number in terms of the other. 

Let the numbers be 2 and 3. 

2/3+2/3+2/3 = 6/3 = (6-2-2)/(3-1-1) = 2/1 = 2 

3/2+3/2=6/2= (6-3)/(2-1)= 3/1 = 3 

In order to understand what it means to be a quotient, you first need to understand what it means to be a "number".

For this, you must be able to derive the number concept from scratch in 5 easy steps, as demonstrated in the axioms of magnitude:

The Gabrielean Axioms of Magnitude: 

1. A magnitude is the concept of size, dimension or extent. 

2. The comparison of any two magnitudes is called a ratio. 

3. A ratio of two equal magnitudes is called a unit. 

4. A magnitude  x  that is measurable by a unit magnitude  u, is a natural number in the ratio  x:u or a proper fraction in the ratio  u:x. 

5. If any magnitude or ratio of magnitudes cannot be completely measured, that is, they have no common measure, not even the unit,  then it is called an incommensurable magnitude or ratio of magnitudes. 

Now you can formally state the axioms of arithmetic:

The Gabrielean Axioms of Arithmetic: 

1. The difference (or subtraction) of two numbers is that number which describes how  much the larger exceeds the smaller. 

2. The difference of equal numbers is zero. 

3. The sum (or addition) of two numbers is that number whose difference with either of the two numbers is the other number. 

4. The quotient (or division) of two numbers is that number that measures either number in terms of the other. 

5. If a unit is divided by a number into equal parts, then each of these parts of a unit, is called the reciprocal of that number. 

6. Division by zero is undefined, because 0 does not measure any number. 

7. The product (or multiplication) of two numbers is the quotient of either number with the reciprocal of the other. 

8. The difference of any number and zero is the number. 

Observe that all the basic arithmetic operations are defined in terms of difference. 

Gabrielean Axioms of arithmetic explained: 

1. The difference (or subtraction) of two positive numbers, is that positive number which describes how much the larger number exceeds the smaller. 

Let the numbers be 1 and 4. 

4 - 1 = 3 or |1 - 4| = 3 

2. The difference of equal numbers is zero. 

Let the numbers be k and k. 

|k - k| = 0 

3. The sum (or addition) of two given positive numbers, is that positive number whose difference with either of the two given numbers produces the other number. 

Let the numbers be 1 and 4. 

1 + 4 = 5 because 5 - 4 = 1 and 5 - 1 = 4 

4. The quotient (or division) of two positive numbers is that positive number, that measures either positive number in terms of the other. 

Let the numbers be 2 and 3. 

2/3+2/3+2/3 = 6/3 = (6-2-2)/(3-1-1) = 2/1 = 2 

3/2+3/2=6/2= (6-3)/(2-1)= 3/1 = 3 

5. If a unit is divided by a positive number into equal parts, then each of these parts of a unit, is called the reciprocal of that positive number. 

Let the positive number be 4. 

The reciprocal is 1/4 and 1/4+1/4+1/4+1/4 = 1 

6. Division by zero is undefined, because 0 does not measure any magnitude. 

Since the consequent number is always the sum of equal parts of a unit, it follows clearly that no such number exists that when summed can produce 1, that is, no matter how many zeroes you add, you never get 1. 

7. The product (or multiplication) of two positive numbers is the quotient of either positive number with the reciprocal of the other. 

Let the numbers be 2 and 3. 

1/2+1/2+1/2+1/2+1/2+1/2=3 

1/3+1/3+1/3+1/3+1/3+1/3=2 

8. The difference of any number and zero is the number. 

Let the number be k. 

|k-0|=|0-k| 

Observe that all the basic arithmetic operations are defined in terms of the primitive operator called difference. 

These are the true axioms of arithmetic and the definition of the arithmetic operators. 

Axioms for negative numbers are easy to define with some trivial modification. 

http://thenewcalculus.weebly.com
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