In Canada, there is renewed attention to the violence experienced by Indigenous peoples in residential schools, by police, through hyper-imprisonment and child removal, in hospitals, and in the contemporary education system. All of these issues are interlinked and outcomes of the carceral state—defined as the policing, monitoring, surveillance, criminalization and imprisonment of people, especially Indigenous and other racialized peoples. In this article, I define and illustrate what the carceral state looks like in Canada. I articulate the current approach to studying the carceral in political science, note the paucity of research in the Canadian context and show where attention has been cast previously. I describe an improved approach to studying the carceral, arguing that a decolonized approach to studying the carceral must be relational and abolitionist, seeking to reduce and eliminate the use of carceral interventions.

Studies in the sociopolitics of archaeology have shown patterns of inequality in publishing. Because this inequality affects the richness of perspectives on the past, the extent of unevenness requires continual documentation. This article explores gendered and institutionally based patterns of authorship in prominent archaeology journals, archaeology papers in general science journals, and Sapiens, a public-facing web magazine, from 2016 to 2021. We find that the representation of women is similar across these two types of journals, for authors both in the United States and abroad. Men still publish significantly more than women though the gap is narrowing due to the publication activity of recent PhDs. Using a large database of PhDs as a baseline for comparison, we find that women publish less in these venues than expected, resulting in an imbalance. Some archaeology programs have a larger presence in journal publishing than others, but this imbalance is not as pervasive as what has been observed in hiring practices. Archaeology journals exhibit healthier measures of diversity, compared to Science, in terms of the institutional affiliation of authors.

A theorem of Brady and Meier states that a right-angled Artin group is a duality group if and only if the flag complex of the defining graph is Cohen–Macaulay. We use this to give an example of a RAAG with the property that its outer automorphism group is not a virtual duality group. This gives a partial answer to a question of Vogtmann. In an appendix, Brück describes how he used a computer-assisted search to find further examples.

Kaposiform hemangioendothelioma is a rare tumour of vascular origin that rarely occurs in the heart. We provided a rare case of a 26-day-old infant with tachypnoea. Echocardiography showed a solid tumour in the pericardial cavity and a large amount of pericardial effusion. The solid tumour was confirmed by surgery, and the pathology was kaposiform hemangioendothelioma. We analysed this case and reviewed the related literature to explore the clinical features and echocardiographic manifestations to improve the understanding, diagnosis, and treatment of this disease for clinicians and sonographers.

We show that under $\mathsf {BMM}$ and “there exists a Woodin cardinal,$"$ the nonstationary ideal on $\omega _1$ cannot be defined by a $\Pi _1$ formula with parameter $A \subset \omega _1$. We show that the same conclusion holds under the assumption of Woodin’s $(\ast )$-axiom. We further show that there are universes where $\mathsf {BPFA}$ holds and $\text {NS}_{\omega _1}$ is $\Pi _1(\{\omega _1\})$-definable. Lastly we show that if the canonical inner model with one Woodin cardinal $M_1$ exists, there is a generic extension of $M_1$ in which $\text {NS}_{\omega _1}$ is saturated and $\Pi _1(\{ \omega _1\} )$-definable, and $\mathsf {MA_{\omega _1}}$ holds.

As an extension of Sylvester’s matrix, a tridiagonal matrix is investigated by determining both left and right eigenvectors. Orthogonality relations between left and right eigenvectors are derived. Two determinants of the matrices constructed by the left and right eigenvectors are evaluated in closed form.

We examine whether an individual's inability to save in the last 12 months affects the extent to which they are concerned about their future financial security and their propensity to plan for retirement. We use an original survey based upon representative samples of working individuals in 16 countries. We show that individuals who were unable to save over the 12-month period prior to the survey are less likely to consider well-being in retirement as their major financial concern. They are also less likely to invest in supplementary pension funds than those who were able to accumulate savings. We provide evidence that these findings are robust under several specifications and are mediated by respondents' perceived income prospects and assessment of their current financial situations.

Cheng and Newhouse (Ergod. Th. & Dynam. Sys. 25 (2005), 1091–1113) proved a variational principle for topological preimage entropy $h_{\mathrm {pre}}(f)$:

$$ \begin{align*} h_{\mathrm{pre}}(f)=\sup_{\mu\in\mathcal{M}(X,f)}h_{\mathrm{pre},\mu}(f). \end{align*} $$

Unfortunately, we show in this note that this variational principle is not true.

Since the early years of activation and workfare in the 1990s, the use of welfare conditionality and benefit sanctions has been proposed among the necessary solutions to ensure the efficiency of welfare policy by reinforcing individual economic incentives. Using rich administrative registers from Norway, we produce micro-level quantitative evidence on compulsory activation for young recipients of social assistance. The empirical challenge is that activation through the threat of benefit sanctions is not a feature that unambiguously emerges from observational data, except for when sanctions indeed take place and benefits are reduced. To overcome this barrier, we introduce a novel methodology to identify individual-level effects of activation on young welfare recipients, exploiting municipal variation in the introduction of compulsory activation. More precisely, we study whether individuals who are residents in municipalities that have introduced compulsory activation display a stronger relationship between their labor market status (activation) and their benefit size (because sanctions being in place) compared to individuals residing in municipalities where activation has not been made compulsory. Our results show that there is no different relationship between social assistance benefits and passive labor market status for individuals living in municipalities that practice activation compared with individuals residing in municipalities in which activation is not yet mandatory. In other words, there is no visible effect of sanctions for passive recipients.

Certaines études suggèrent que le projet de Charte des valeurs du PQ et la loi 21 ont nourri un sentiment d'exclusion chez les membres des religions minoritaires. Cependant, aucune étude ne permet à ce jour de comparer le sentiment d'appartenance des minorités religieuses avant et après la mise à l'agenda de ces projets législatifs. Ancrée dans la recherche sur les « événements focalisateurs » et reposant sur des données de trois sondages réalisés en 2012, 2014 et 2019, notre étude examine l'impact des débats sur laïcité sur le sentiment d'appartenance des immigrants racisés au Québec. Nos résultats démontrent qu'un déficit d'appartenance au Québec par rapport au Canada existait déjà en 2012, mais qu'il était circonscrit à certains groupes, notamment ceux de dénominations non chrétiennes et les non francophones. Nos analyses montrent aussi qu'avec les débats sur la laïcité, le déficit d'appartenance au Québec s'est étendu aux minorités non religieuses et aux francophones.