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This study aims to analyze the efficient market hypothesis (EMH) of cryptocurrencies on multiple platforms by observing whether there is a discrepancy in the levels of efficiency between different exchanges. Additionally, EMH is tested in a multivariate way: whether the prices of the same cryptocurrencies traded on different exchanges are temporally related to each other. ADF and KPSS tests, whereas the vector autoregression model of order p – VAR(p) – for multivariate system.

Both Bitcoin and Ethereum show efficiency in the weak form on the main platforms in each market alone. However, when estimating a VAR(p) between prices among exchanges, there was evidence of Granger causality between cryptocurrencies in all exchanges, suggesting that EMH is not adequate due to cross information.

It is essential to assess the cryptocurrency market in a multivariate way, not only to favor its maturation process, but also to promote a broad understanding of its inherent risks. Thus, it will be possible to develop financial products that are actively managed in a more sophisticated cryptocurrency market.

There is a possibility of performing arbitrage on different exchanges and market assets through cross-exchanges. Thus, emphasizing the need for regulation of exchanges in the digital asset market, as an eventual price manipulation on a single platform can impact others, which generates various distortions.

This study is the first to find evidence of cross-information for the same (and other) cryptocurrencies among different exchanges.

The purpose of this paper is to indicate how place making and belonging are still largely governed by race in Brazil and South Africa. As such, it engages with debates about the postracial informed by the study of two urban settings that are discernible by their relationship with race issues: Rio de Janeiro’s favelas and Johannesburg’s townships.

The study provides a brief account of post-racial discourses in each country: Brazilian racial democracy and South Africa’s self-imagination as rainbow nation. Subsequently, these two major national self-understandings are probed using data gathered in the fieldwork (participant observation and in-depth interviews) carried out in Rio de Janeiro’s favelas and Johannesburg’s townships between 2013 and 2015.

The main accomplishment of the study is to approach debates about senses of place, understood here as place making and belonging, from the everyday experiences of favela and township inhabitants. The study suggests discrepancies between the racialized senses of place in Brazilian and South African urban milieus and any sort of post-racial rhetoric. Despite the existence of norms and institutions promoting equal rights of citizenship in Brazil and South Africa, place making is still largely encumbered by the legacy of racial domination in both countries.

By adding new evidence to the research on everyday racism, the study explores the mutual influences between senses of place and the persistent patterns of racial segregation in two urban contexts of the global South. Beyond this, it offers a comparative approach that connects micro-level social dynamics and macro-level discourses.