Which softwares are useful in graph theory and in particular in spectral graph theory?

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When studying the toxicity study of plant, how to choose which extract is suitable?

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Are there any good simple systems or platforms to recommend?

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Is the mentioned CV graph a valid one as this graph have only one peak prominent (reduction)?

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Anton Vrdoljak

There are a few similar posts with many valuable answers, worth seeing:

https://www.researchgate.net/post/Any_good_toolsonline_or_otherwise_to_draw_graphsGraph_Theory_in_my_research_paper

https://www.researchgate.net/post/Which_tools_are_used_for_drawing_graphs_in_graph_theory

Vignesh Ravi

Dear Prof. Shridhar Patekar In GraphTea software, we can get the energy of graphs. You can try that professor.

Prasanna Poojary

SageMath

Peter Klyucharev

NetworkX: https://networkx.github.io

Shridhar Patekar

Thank you Anton Vrdoljak, Vignesh Ravi, Prasanna Poojary, and Peter Klyucharev for your responses

You're welcome Shridhar Patekar, and thanks for recommendation!

Muhammad Azeem

Graph Tea, GeoTeric