Escher and the Droste effect


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Page 4 of 41 (new to old)

Lida2008-11-09 12:28:39
Thanks for explaining the whole procedure so well that I was actually able to understand it! Those animations made my head dizzy! Great site.

Fortino Garza2008-10-31 08:13:58
Thank you for a very decent approach, to math art culture.

Dok Kaan2008-10-23 13:21:37
I have a reasonable collection of his work. I am delighted with this magnificent addendum.

sergio tarango2008-10-03 16:38:34
i am inspired byEschers work

tyomero2008-10-01 17:56:39
A great site, I've never thought about this efect as a mapping in the complex plain. It's great!! I wonder if this was the original intention of Escher?

carrie2008-09-23 23:25:10
um hi HOW DID HE DIE?!!!!!!!!!!!!!!!!!!!!!!!!!!

klein2008-09-14 14:02:40
fantastic, hypnotic, perfect. i've always liked escher, but i didn't know how exactly smart and open minded he was.

stephanie nykiforuk2008-09-11 18:15:38
this man has accomplished everything i could dream of becoming.he is the worlds greatest graphic artsit. i own all his books and have done a lot of research about himn and i am truly disapointed that i was born after he died unabling me to ever meet this astonishing man.

Tibor Vamos2008-09-04 22:50:47
Fascinated. Prof. Rónyai draw my attention to your project, I to Escher.

carolyn kinnison2008-09-02 22:19:01
this was unique and interesting love mc

joseph2008-08-29 18:52:15
have an interest in the loop as it related to thought processes ...

Gonzalo Gómez2008-08-25 05:12:36
I have always admired Escher´s work. In books is impossible to see what you have discovered. Thank you.

João2008-08-20 23:43:31
Great work ! thanks for the videos, very enlightning !

angel2008-08-17 07:54:55
this man does nice pictures.... please send some to my email

Smil Ochs2008-08-13 00:05:42
Fascinated by the way our eye is conditined to interpred 3-D effects

stamos2008-07-31 16:53:57

A.P.Roodvoets2008-07-17 14:19:53
Mooie, instructieve site! Tony Roodvoets

C2008-07-08 17:36:48
This is great. I spent the weekend scrutinising a graphic like the ones above trying to figure it out (I was actually tripping), and so with the info on this I can draw my conlusions. Thanks.

mommy2008-06-19 13:45:34
ur mom

Dr Jerome Healy2008-06-13 13:05:13
great Work

Debby Staten2008-06-02 02:46:07
I have to old DROSTE trading cards. I would love to know the age? What there worth? and the history on them. I can send you pictures and would appreciate any help. Thank you Debby

Mats Halldin2008-05-27 20:21:57
Hi, and thanks a lot for the site. I discovered Wikipedia through it in 2003 (but not the guest book until now :D) and the site will always have a place in my heart! Keep rocking / Mats

Jean-Claude Bélanger2008-05-27 05:21:25
Thanks You, Merci de laisser ce merveilleux travail à notre disposition. Quelle qualité de présentation à la hauteur du grand génie que fut Escher!

Chuck2008-05-26 17:28:28
Hello, Congratulations on your excellent project. I would like to know what would be the result if both variables were zero (i.e., a=0 and b=0). I noticed that this combination is absent from the galleries and I was wondering why. Thanks, Chuck.

Claude Crépeau2008-05-26 16:45:25
Radio-Canada, the French language branch of our national radio and television agency aired the documentary "Achever l'inachevable" last night. I must confess I had never heard of your work on this topic before, but really this documentary is a small masterpiece for promoting mathematics and relation to arts. Congratulations for your work and for the quality of this exceptional document these people made from your work. I was really happy to sit with my 9 year old daughter telling her I knew personally all the mathematicians (except for Douglas Hofstadter who I never met) in this movie. She was fascinated with the whole story and solution of the "mystery".

Melanie Kerridge2008-05-26 05:35:47
I watched a documentary about how "filled in the blank". Excellent and fascinating. Love your site.

John Cooke2008-05-25 22:34:52
Thank you for your excellent lecture at Magdalen College, Oxford, yesterday.

jose cano2008-05-21 15:06:53
escher I\\\\\\\\\\\\\\\'ll like you to tell me alittle bet about you . I know your name is escher.

ANGELA2008-05-21 07:32:56
he was a genius.

blah2008-05-19 16:08:02
omg nice site for my paper ah.

Matt Amy2008-05-08 18:25:27
Amazing. My head is spinning just thinking about this!

Ernö Keszei2008-05-04 16:48:39

kai2008-05-01 17:06:09
you are gay

Guglielmo2008-04-30 14:25:41
wow nice site.... and i'm now going to hear a conference in Pisa exactely about this subject

umberto sampieri2008-04-29 23:12:54
interesting. reached the site via I am a former mathematician graduated in Normale. At present in business but always fascinated by math and its application. please add my name to your mailing list

Ursula Schroeter2008-04-25 11:43:56
Heard the talk by Prof. Stevenhagen yesterday in Konstanz. Wow! I had already been fascinated by the loop idea in maths since Goedel-Escher-Bach. But I had never had the clue as to how the picture-gallery picture worked. Thanks for the mesmerizing explanation. ... and showing how to take log of a picture. Suppose I shall be looking for Droste-effects each time in the supermarket from now on.

Stephen Hernandez2008-04-17 05:03:28
Amazing work.

Kai Middleton2008-04-02 20:39:54
Do you have higher resolution versions of these images? They are amazing.

Susanna Risa2008-03-27 19:19:09
I heard Prof. Lenstra's lecture at Math Festival in Rome... what can I say? You all made a truly fascinating work, perfectly balanced between math, art and disclosure... not to mention humour. Thanks for sharing it on your site!

Sheridan2008-03-24 16:57:59

Ali Legenhausen2008-03-20 09:17:49
Hello. Nice pictures. Very interesting. I have a book of Escher drawings. I wonder if something similar could be done with any of his other drawings. Have you drawn any other pictures based on similar mathematical principles?

Brian Davis2008-03-19 17:50:05
Facinating! Absolutley Facinating! Will there ever be another Escher???

Gianni Campanile2008-03-17 09:25:56
Dear prof. Lenstra, your lecture about Escher and Droste effect was exteremly interesting, clear and very amusing, even for my 11 years old son. Thanks again, and I hope you\\\'ll be here in Rome next year.

Michele Ranieri2008-03-16 23:53:09
Dear prof. Lenstra Thank you very much for your lecture at Math's Festival today in Rome. Nice, clear and exciting! I won't find peace until I draw a "-3 snakes". I'm studying computer science and I wish I had teachers like you.

Antonio Ianiero2008-03-16 19:48:19
Dear prof. Lenstra, this morning I attended your utterly interesting lecture here in Rome at Math's Festival, and I would like to thank you for the clear explanation and the beautiful Mathematic you shared with us! Antonio Ianiero

Joel G. Sanders2008-03-12 08:55:38
I have a sliding block puzzle black and white cranes(?) of design M. C. Escher "E 128" made by Pussycat in Bad Salzfluen Germany distributed by Cordon Art Baarn Holland. Does anyone know of this and movements technique of the tiles to arrange the puzzle?

Richard Fine2008-03-11 03:35:26
I recently viewed the documentary "Achieving the Unachievable," which reminded me of the influence that M. C. Escher's work has had on my life. I have been creating abstract graphics for nearly 40 years, and would never have started had I not seen some of his works as a teenager. Thank you!!

david dahlgren2008-03-09 15:57:35
Neat stuff! I am intrigued by the fact that artists were needed to do what mathematicians and computers found impossible - something mentioned in the Robinson article in SIAM News. What we are looking at is beyond the bend in a Möbius strip - on the other side of the looking glass and perhaps even some transforming view caught in the bend itself. If there is so much math in this drawing how much is there in a story by De Maupassant or a fugue by J. S. Bach ! The realm of creativity is nothing if not "curiouser and curiouser." Keep looking in. Dave

Tony Jones2008-03-08 22:01:58
Are we talking about the center of the whorl?

Tony Jones2008-03-07 23:35:13
Is the hole in the center of the whorl an infinity?