{{ partial "head.html" . }} {{ partial "mathjax.html" . }} {{ .Title }} | {{ .Site.Title }} {{ partial "navigation.html" . }}

Categories: {{ $len := len .Params.categories }} {{ $idx := 0 }} {{ range sort .Params.categories }} {{ $idx = add $idx 1 }} {{ $url := replace . " " "-" | lower }} {{ . }}{{ if eq $idx $len }}.{{ else }},{{end}} {{ end }}

{{ .Content }} {{ partial "footer.html" . }}