Where has this proof gone wrong? ∞= 1/0

In summary, the use of infinity in mathematical calculations is a complex and nuanced topic. While it can be used to represent unbounded limits in real analysis, it cannot be treated as a real number with operations such as addition and multiplication. Attempts to do so can lead to contradictions and nonsensical results. Therefore, the mathematical consensus is that division by zero and the use of infinity as a number are undefined.
  • #36
jbriggs444 said:
I stand behind the correctness of the logic in #7: If ##\infty## is an element in the field and has the property that ##\frac{1}{\infty}## = 0 then 1=0.

Indeed, I agree as well to this. There is even a field axiom, called the non-triviality axiom, that forbids that ##0 = 1##.
 
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  • #37
From post #7 (with underlining added by me):
jbriggs444 said:
If ##\infty## were a member of the field of real numbers and if one agreed that ##\frac{1}{\infty}=0## then one could proceed to prove nonsense. For example...
In the post above jbriggs444 continues to the nonsense result that 1 = 0.

Mr Indeterminate said:
Then how you reason that x(x-1)=0 isn't proof of 1=0 while in #7 it is?
A shorter version of what jbriggs444 said in post #35.
If x(x - 1) = 0, then we can conclude that x = 0 or x = 1. x can be one of these values but not both. There's no way we can conclude that 0 = 1 from this.

Since we seem to be beating a dead horse here, I'm closing this thread.
 
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<h2>1. Where did this equation come from?</h2><p>The equation ∞= 1/0 is a result of mathematical manipulation and does not have a specific origin. It is often used in theoretical discussions and is not a valid mathematical statement.</p><h2>2. Is this equation true?</h2><p>No, this equation is not true. Dividing any number by zero is undefined in mathematics. The concept of infinity does not apply to division by zero.</p><h2>3. Why can't we just say that infinity equals zero?</h2><p>Infinity and zero are two distinct concepts in mathematics and cannot be equated. Infinity represents an unbounded quantity, while zero represents a specific quantity. Dividing by zero results in an undefined answer, not an infinite one.</p><h2>4. Can't we just ignore the division by zero and focus on the rest of the equation?</h2><p>No, division by zero is a fundamental mathematical error and cannot be ignored. It leads to contradictions and invalidates the entire equation.</p><h2>5. Are there any situations where this equation could be considered valid?</h2><p>No, this equation is not valid in any mathematical context. It goes against the fundamental rules and principles of mathematics and cannot be justified. </p>

1. Where did this equation come from?

The equation ∞= 1/0 is a result of mathematical manipulation and does not have a specific origin. It is often used in theoretical discussions and is not a valid mathematical statement.

2. Is this equation true?

No, this equation is not true. Dividing any number by zero is undefined in mathematics. The concept of infinity does not apply to division by zero.

3. Why can't we just say that infinity equals zero?

Infinity and zero are two distinct concepts in mathematics and cannot be equated. Infinity represents an unbounded quantity, while zero represents a specific quantity. Dividing by zero results in an undefined answer, not an infinite one.

4. Can't we just ignore the division by zero and focus on the rest of the equation?

No, division by zero is a fundamental mathematical error and cannot be ignored. It leads to contradictions and invalidates the entire equation.

5. Are there any situations where this equation could be considered valid?

No, this equation is not valid in any mathematical context. It goes against the fundamental rules and principles of mathematics and cannot be justified.

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