Samyak Gyan means right knowledge. It is one of the three jewels (Ratnatraya) a Jain aims to realize for liberation. It is the correct understanding of the nature of soul, karma, and the tattvas, and it must be connected with right faith (Darshan) and right conduct (Charitra). Different Jain traditions discuss the details in slightly different words, but the essential idea is the same: true knowledge that removes doubt and misconception and leads to liberation. (Source: Jain Knowledge explanation of Samyak Gyan.) You can read more here

Upkaran (the essential articles) for monks and nuns are the simple, necessary tools they use to live a dharmic life and to avoid harming small beings. They are not for comfort, but to minimize injury to life and to support self-discipline. The list varies a little between Shwetambar and Digambar traditions, but the principle is the same: keep only what is necessary for ahimsa and ascetic practice.

• For Shwetambar sadhu/sadhvi (typical seven or so items):

- Muhpatti (mouth covering) - Ogha/Rajoharan (soft broom) - Kamandal (water pot) - Patra (alms-bowl) - Astrotari/cloth (cloth for handling utensils) - Granth (scripture for study, when allowed) - Others may be included in different lineages

• For Digambar sadhus/sadhvis the list is similar but may use different implements (and Digambar monks often keep fewer possessions).

The core purpose of upkaran is to minimize harm (himsa) to tiny beings, support aparigraha (non-attachment), and help maintain discipline on the spiritual path. You can read more about the general idea here and about the related upkaran for sadhu/sadhvi here

If you’d like, I can summarize how Samyak Gyan fits with the other two jewels (Samyak Darshan and Samyak Charitra) and how the upkaran support the path, in simple steps.