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 October 1st, 2018, 09:19 AM #1 Newbie   Joined: Oct 2018 From: here Posts: 1 Thanks: 0 trouble with multiplication I have found a flaw (I'm sure I'm not the ONLY one). Now in my understanding of math is of < or > or = to etc. etc. and I also realize the difference to physical proof to theoretical proof from what math seems to be based on (in my opinion). Also to be considered is that Occam's razor DOES NOT always work. Why? Because of Murphy's law. (Do you know this??) So knowing things go wrong while accepting the simplest answer it tells me that SOMETHING is wrong! I know this sounds like wacky mumbo jumbo, but well it's the nature of the beast, so to speak. Anyways.... 0x5=? 0? right 5x0=? 0? right? I say wrong, and I have PHYSICAL proof. I know this will get some flack, but I'll let this sit here so people can see it. PLEASE don't be shy and let's get to the bottom of this. I am very serious and this is NO WAY an attempt to insult anyone! I just want my windows OS to work flawlessly and until we get all the CONTRADICTIONS in mathematics it will never be flawless. Thank you for making it through this spiel and look forward to any and all sides of criticism. Last edited by skipjack; October 1st, 2018 at 11:32 PM.
 October 1st, 2018, 11:37 PM #2 Global Moderator   Joined: Dec 2006 Posts: 20,003 Thanks: 1862 Google suggests 0 for 5x0, but not for 0x5.
 October 2nd, 2018, 01:56 PM #3 Global Moderator   Joined: May 2007 Posts: 6,643 Thanks: 628 Since when is multiplication not commutative?
 October 2nd, 2018, 02:40 PM #4 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,645 Thanks: 955 What d'heck going on? Is x a multiplication symbol? If so, why? Google gives 0 for both 5*0 and 0*5. Also, google treats 0x5 as an error code.
October 2nd, 2018, 03:16 PM   #5
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Quote:
 Originally Posted by mathman Since when is multiplication not commutative?
When using octonions, for example.

 October 2nd, 2018, 03:52 PM #6 Senior Member   Joined: Oct 2009 Posts: 633 Thanks: 194 Is there supposed to be any proof or evidence in your OP? I must have missed that. Thanks from JeffM1
October 2nd, 2018, 03:56 PM   #7
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Quote:
 Originally Posted by skipjack When using octonions, for example.
And there you go.

But I am still waiting for the "physical" proof that $a * 0 \ne 0 * a.$

October 2nd, 2018, 04:01 PM   #8
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Quote:
 Originally Posted by skipjack When using octonions, for example.
Onions grown in October....for your BigMac...?

October 2nd, 2018, 04:02 PM   #9
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Quote:
 Originally Posted by Micrm@ss Is there supposed to be any proof or evidence in your OP? I must have missed that.
No, you missed nothing. There WAS an assertion that a "physical proof" existed, but the OP overlooked supplying evidence for that assertion. I am confident that the oversight will be corrected at any moment.

October 2nd, 2018, 05:50 PM   #10
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Quote:
 Originally Posted by skipjack Google suggests 0 for 5x0, but not for 0x5.
That looks like notation for a hexadecimal number.

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