Just a minor remark on the terminology:

Historically, the result known as S-procedure was related to quadratic functions (as discussed, for example, in Sec. 2.6.3 of the freely online available Boyd, Stephen, Laurent El Ghaoui, Eric Feron, and Venkataramanan Balakrishnan. Linear Matrix Inequalities in System and Control Theory. Studies in Applied and Numerical Mathematics. Society for Industrial and Applied Mathematics, 1994, https://web.stanford.edu/~boyd/lmibook/).

The extension to SOS polynomials is (perhaps better) known as Putinar’s Positivstellensatz (as discussed, for example, in Sec. 2.4 in J. B. Lasserre, An Introduction to Polynomial and Semi-Algebraic Optimization. in Cambridge Texts in Applied Mathematics Book, no. 52. Cambridge: Cambridge University Press, 2015).

It may help readers when searching for some more info in the literature.

This is an interesting example of applying systems of systems concepts to a form of integrated therapy. By maintaining the same rigorous requirements for characterization as a system of systems, a framework emerges which can be applied to other integrated systems.

A Solo un Paso de Ir a Japón {Iván Matusevich en YouTube}

site:: [[YouTube]] channel:: [Iván Matusevich]] date:: 2022-08-09 url:: https://www.youtube.com/watch?v=1OMc_nh5tpM accessed:: 2023-12-18

• Title SOS d'un terrien en detresse
• This is a famous French song that is covered by Dimash Kudaibergen
• The original was written by Daniel Bolavoine, who tragically died in a helicopter crash as he was going to Africa to help with a development project
• Balavoine made it famous on his rock opera performance on the French "Starmania" show. There is another orchestral recording Balavoine did afterwards:
  • https://www.youtube.com/watch?v=Fms-RDCURSU
  • https://youtu.be/9kZuDhuTkxE
  • https://www.youtube.com/watch?v=9kZuDhuTkxE
• This video is Dimash performing the famous song for the French people. Dimash sings it with pristien vocal expression, even beyond the original
• The history of how Dimash adapted this song is shown in this youtube video, which shows his famous Chinese reality show performance
  • https://www.youtube.com/watch?v=tf_UIAOWfAU
  • https://www.youtube.com/watch?v=UYPAjmWP140
  • https://youtu.be/AUARjexCTlQ
  • https://youtu.be/0vn_kI4-otQ
  • 26 min. of this concert: https://youtu.be/zmEaxCg6_8k
• The opening lyric of the song
  • why do I live, why do I die? is a perfect BEing Journey to discuss mortality salience

what does this mean?