What is injective also known as?
Could you please explain to me what injective is commonly referred to as in the realm of mathematics? I've heard it mentioned in a few discussions but haven't quite grasped its alternative name. Could you clarify this concept for me, perhaps with a brief description of its significance in the field? It would be greatly appreciated if you could keep the explanation concise yet comprehensive, as I'm eager to understand this concept better. Thank you in advance for your assistance.
What is the mantle also known as?
Could you please elaborate on the term 'mantle' and its alternative names? I'm particularly interested in understanding its context within the realm of cryptocurrency and finance. Could you provide a brief yet comprehensive description of this concept? Additionally, I'd like to know if it has any specific applications or roles within the industry that make it significant or noteworthy. Your insights would be greatly appreciated.