[to squash] reword SLIP39 thanks

Author: apoelstra

mathematical-companion/main.tex

@@ -1299,8 +1299,9 @@ \section{Conclusion and Acknowledgements}
 would be hopeless for users to notice or recover from arithmetic and transcription
 mistakes, and this whole project would be unworkable.
 
-We thank the authors of SLIP39, whose scheme exploits this compatibility, and
-which inspired us to attempt a hand-computable version of it.
+We thank the authors of SLIP39, which also uses both SSSS and BCH codes, and
+inspired us to attempt a hand-computable version of it exploiting the compatibility
+between the two.
 
 We thank Dr.~Curr for then noticing that by using a code over $\fttwo$
 rather than $\mathbb{F}_{1024}$, it is possible to do these computations by hand,