[MathML] Cichoń's Diagram

hbghlyj

LaTeX (texlive.net):

MathML:$$\begin{array}{ccccccccccc}\multicolumn{2}{c}{}& cov\left(ℒ\right)& ⟶& non\left(𝒦\right)& ⟶& cof\left(𝒦\right)& ⟶& cof\left(ℒ\right)& ⟶& 2^{{\aleph }_0}\\ \multicolumn{2}{c}{}& \uparrow & & \uparrow & & \uparrow & & \uparrow & \multicolumn{2}{c}{}\\ \multicolumn{4}{c}{}& 𝔟& ⟶& 𝔡& \multicolumn{5}{c}{}\\ \multicolumn{4}{c}{}& \uparrow & & \uparrow & \multicolumn{5}{c}{}\\ {\aleph }_1& ⟶& add\left(ℒ\right)& ⟶& add\left(𝒦\right)& ⟶& cov\left(𝒦\right)& ⟶& non\left(ℒ\right)& \multicolumn{2}{c}{}\end{array}$$这里的↑是作者手动设置了minsize, 而不是浏览器自动伸缩到表格高度的见bugzilla
作者还设置了CSS把表格的padding(默认竟然是0.4em而不是零!)设为0.1em以达到上面的效果:

When using an mtable, the table cell (mtd) default vertical padding produces excessive spacing. Setting the top and bottom padding to zero "0" fixes this.

hbghlyj

在Firefox 109的效果:

在Chrome 109的效果:

Frédéric Wang — Shipping MathML in Chrome 109 [BlinkOn 17]    2022-12-05
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1#公式 在Chrome效果不佳, 因为Chrome 109尚未支持columnspan属性, 跨行的 ↑ 显示异常, 见<mtd> browser compatibility.