[GH-ISSUE #319] Sum of the terms of a recursive sequence #140

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opened 2026-05-06 13:15:41 +02:00 by BreizhHardware · 0 comments

BreizhHardware commented

2026-05-06 13:15:41 +02:00

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Originally created by @NowanPython on GitHub (Mar 30, 2023).
Original GitHub issue: https://github.com/UpsilonNumworks/Upsilon/issues/319

Describe the bug
In the Calculation app it is impossible to calculate the sum of the terms of a recursive sequence, it only shows the input expression, but it actually works using the graph menu into the Sequence app and also works with Epsilon 20.

To Reproduce

Define a recursive sequence
Go into the Calculation app
Try calculating the sum of some terms, for example sum(u(n),n,5,10).

Expected behavior
I expected the sum to appear in the Calculation app, in order to reuse a precise value afterwards for example.

Screenshots
Doesn't work with Upsilon

Works with Epsilon 20

Works with the graph tab

Device (please complete the following information):

Computer + N0110
Upsilon Version: 1.0.1-beta
Upsilon commit: e8a274b

Thank you for the time you spend developing Upsilon ♥

Originally created by @NowanPython on GitHub (Mar 30, 2023). Original GitHub issue: https://github.com/UpsilonNumworks/Upsilon/issues/319 **Describe the bug** In the *Calculation* app it is impossible to calculate the sum of the terms of a recursive sequence, it only shows the input expression, but it actually works using the *graph* menu into the *Sequence* app and also works with Epsilon 20. **To Reproduce** 1. Define a recursive sequence 2. Go into the *Calculation* app 3. Try calculating the sum of some terms, for example `sum(u(n),n,5,10)`. **Expected behavior** I expected the sum to appear in the *Calculation* app, in order to reuse a precise value afterwards for example. **Screenshots** *Doesn't work with Upsilon* ![image](https://user-images.githubusercontent.com/129430964/228931790-da09f34e-3ea9-4258-968a-7ba6376565cb.png) ![image](https://user-images.githubusercontent.com/129430964/228931820-266cdcd1-1273-4b06-b0cf-6de66ad242b0.png) *Works with Epsilon 20* ![image](https://user-images.githubusercontent.com/129430964/228932262-915ea4b2-7695-4436-bdea-22dc52aa36ef.png) *Works with the* graph *tab* ![image](https://user-images.githubusercontent.com/129430964/228932431-a64d0907-58e9-4798-8f58-6cb7439b05f1.png) **Device (please complete the following information):** - Computer + N0110 - Upsilon Version: `1.0.1-beta` - Upsilon commit: e8a274b ***Thank you for the time you spend developing Upsilon ♥***