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Question: What is wrong with this document block

Question:What is wrong with this document block

C_R 2520 Maple 2023
gui
November 01 2023
1

The document block (copied from a larger document) in the attached file could be executed with Maple 2022 (in the larger document).

Maple 2023 evaluates... that I have to interrupt.

On my installation I cannot convert the block to 1d input to investigate for hidden characters. This works in 2022.

Trying to manipulate (splitting, cutting, ...) the block lead several times to the 2023 GUI not responding normally which required Maple restart.

What I found with Maple 2022 and lprint: There is a ndash character here

Ein Bild, das Text, Schrift, Reihe enthält. Automatisch generierte BeschreibungEin Bild, das Schrift, Reihe, Handschrift, weiß enthält. Automatisch generierte Beschreibung

which must be deleted in the attached file. The larger document does not lprint a ndash. So this might be a copy/paste artefact and is perhaps unrelated to the evaluation problem with 2023.

With Maple 2023 there is no ndash but the output looks differentEin Bild, das Schrift, Diagramm, Reihe, Design enthält. Automatisch generierte Beschreibung

The whole thing is perhaps related to this

Can someone reproduce and/or help?


 

interface(version)

`Standard Worksheet Interface, Maple 2023.1, Windows 10, July 7 2023 Build ID 1723669`

 (1)

exp(`–`((1/2)*x^2)-(1/2)*y^2)/(2*Pi)

(1/2)*exp(-(1/2)*x^2-(1/2)*y^2)/Pi

 (2)

`if`(evalf((1/2)*exp(-(1/2)*x^2-(1/2)*y^2)/Pi) < 0.7957747150e-1, (1/2)*exp(-(1/2)*x^2-(1/2)*y^2)/Pi, NONE); p3 := plot3d(%, x = -3 .. 3, y = -3 .. 3, color = blue); `if`(evalf((1/2)*exp(-(1/2)*x^2-(1/2)*y^2)/Pi) < 0.2153927929e-1, (1/2)*exp(-(1/2)*x^2-(1/2)*y^2)/Pi, NONE); p4 := plot3d(%+0.1e-3, x = -3 .. 3, y = -3 .. 3, color = red)

Warning,  computation interrupted

  

NULL


 

Download plot3d_in_2023_not_working.mw
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