# Math of Group Formation

**URL:** https://forum.pokt.network/t/math-of-group-formation/63
**Category:** Research
**Created:** [November 13, 2018, 8:26pm UTC](https://forum.pokt.network/t/math-of-group-formation/63 "2018-11-13T20:26:10Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![hunter](https://forum.pokt.network/letter_avatar_proxy/v4/letter/h/ba9def/32.png) [@hunter](https://forum.pokt.network/u/hunter)
#### Post date: [November 13, 2018, 8:26pm UTC](https://forum.pokt.network/t/math-of-group-formation/63/1 "2018-11-13T20:26:10Z")

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This link:

> **[Excerpts of Mimir B2i Bridge Protocol Whitepaper](https://docs.google.com/document/d/1a0nz3ksRn6k8kjAlzAjP9OroxnTwXxRAxgmCSMDcD78/edit#heading=h.mf2u7u967zc8)**
>
> Excerpts of Mimir B2i Bridge Protocol Whitepaper Group Formation for Micro Channels In the formation of a Proof of Stake reporting system for blockchain state there is the problem of group formation. This concern is derived from the fact that the...

has portions of the Mimir B2i Bridge Whitepaper from a version that carried technical maths. This is by no means a complete write-up, but it does demonstrate how to use N choose K to form probabilities around sub group membership for Sybil attacks. It also describes what was a valid model under the Mimir Bridge assumptions for stake requirements. Hope it helps you guys out!