We present positive evidence of price stability cryptocurrencies as a medium exchange. For the sample years from 2016 to 2020, prices major are found be stable, relative financial assets. Specifically, after filtering out less-than-one-month cycles, we investigate daily returns in US dollars (i.e., Bitcoin, Ethereum, and Ripple) well their comparators legal tenders, Euro Japanese yen, stock ind...

We study the effect of homogenization on flame propagation in periodic excitable media, when the width of the flame is much smaller than the characteristic size of the heterogeneities.