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Topic: 6)are all German mathematicians like Peter Roquette,
Gunther Schmidt Karl-Otto Stöhr- as dumb as Franz, teachi
ng a Conic section is ellipse, when in truth it is an oval?

Replies: 11   Last Post: Oct 4, 2017 7:05 PM

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Me

Posts: 1,414
Registered: 1/23/16
Re: Princeton math dept agreeing with Franz for none has spotted the
error- as dumb as Franz, teaching a Conic section is ellipse, when in truth
it is an oval?

Posted: Oct 2, 2017 1:57 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

On Monday, October 2, 2017 at 5:00:29 PM UTC+2, Archimedes Plutonium wrote something.

@Archie: You see, my little demonstration proves that (certain) cone sections "as depicted in my diagram" as well as (certain) cylinder sections (as described by you) are ellipses. qed

Note, Archie, that there is no reference to Dandelin Spheres whatsoever.

Not convinced? Can you point out an error in my simple calculation (of the shape of the cone/cylinder section) I provided?

Now you have been offered two proofs with completely different "proof ideas", still not satisfied with it? If so, can you tell us what's WRONG with these demonstrations/proofs?


Date Subject Author
10/2/17
Read 6)are all German mathematicians like Peter Roquette,
Gunther Schmidt Karl-Otto Stöhr- as dumb as Franz, teachi
ng a Conic section is ellipse, when in truth it is an oval?
plutonium.archimedes@gmail.com
10/2/17
Read Re: 6)are all German mathematicians like Peter Roque
tte, Gunther Schmidt Karl-Otto Stöhr- as dumb as Franz, te
aching a Conic section is ellipse, when in truth it is an ov
al?
Me
10/2/17
Read Princeton math dept agreeing with Franz for none has spotted the
error- as dumb as Franz, teaching a Conic section is ellipse, when in truth
it is an oval?
plutonium.archimedes@gmail.com
10/2/17
Read Re: Princeton math dept agreeing with Franz for none has spotted the
error- as dumb as Franz, teaching a Conic section is ellipse, when in truth
it is an oval?
alouatta.coibensis@gmail.com
10/2/17
Read Re: Princeton math dept agreeing with Franz for none has spotted the
error- as dumb as Franz, teaching a Conic section is ellipse, when in truth
it is an oval?
Me
10/2/17
Read Re: 6)are all German mathematicians like Peter Roque
tte, Gunther Schmidt Karl-Otto Stöhr- as dumb as Franz, te
aching a Conic section is ellipse, when in truth it is an ov
al?
Dan Christensen
10/2/17
Read Re: 6)are all German mathematicians like Peter Roquette
, Gunther Schmidt Karl-Otto Stöhr- as dumb as Franz, tea
ching a Conic section is ellipse, when in truth it is an oval
?
Peter Percival
10/2/17
Read Re: 6)are all German mathematicians like Peter Roque
tte, Gunther Schmidt Karl-Otto Stöhr- as dumb as Franz, tea
ching a Conic section is ellipse, when in truth it is an ova
l?
Me
10/3/17
Read Re: 6)are all German mathematicians like Peter Roque
tte, Gunther Schmidt Karl-Otto Stöhr- as dumb as Franz, te
aching a Conic section is ellipse, when in truth it is an ov
al?
plutonium.archimedes@gmail.com
10/3/17
Read Re: 6)are all German mathematicians like Peter Roque
tte, Gunther Schmidt Karl-Otto Stöhr- as dumb as Franz, te
aching a Conic section is ellipse, when in truth it is an ov
al?
needspy@gmail.com
10/4/17
Read Re: 6)are all German mathematicians like Peter Roque
tte, Gunther Schmidt Karl-Otto Stöhr- as dumb as Franz, te
aching a Conic section is ellipse, when in truth it is an ov
al?
Jan Bielawski
10/4/17
Read Re: 6)are all German mathematicians like Peter Roque
tte, Gunther Schmidt Karl-Otto Stöhr- as dumb as Franz, te
aching a Conic section is ellipse, when in truth it is an ov
al?
Me

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