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Actually I came upon this through MO a couple of days ago: in here (http://aimath.org/aimnews/lmfdb/) there is a mesmerizing image

enter image description here

The caption reads

A Maass form, one of the 20 different types of objects in the LMFDB.

Image by Fredrik Strömberg

Of course I could just email the person or Alina Bucur whose homepage hosts the image, or ask at LMFDB but I somehow prefer to start from here.

Does anyone know which Maass form is depicted here? What does the color coding mean? How has it been calculated? Where can I read about it?

After accepting an answer I found (in the "Related" column), in an answer to Zeroes of Maass forms a link to a more informative page by Strömberg with lots of different kind of images like

enter image description here

or

enter image description here

Then I also found another even more haunting and mysterious one at still different page, again without any details given. Let me reproduce this one too

enter image description here

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You can find details on the Maass waveform calculation in SAGE in this talk by Frederik Strömberg. I guess you'll have to ask Dr. Strömberg for the precise parameters used in the waveform you mention.

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  • $\begingroup$ OK seems like I have to ask him in any case. But I am very grateful for the link of the talk, I don't think I would be able to discover it myself. $\endgroup$
    – მამუკა ჯიბლაძე
    Commented May 16, 2016 at 10:47

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