Heap File Organization is an unorganized collection of pages, which is stored in random order.

• create
• get
• write
• delete

must support iterating over all pages

see also two-dimensional heat equation the following relates to 1d

heat distributes by “diffusing”; this is heat \(u\) diffusing across a plate

\begin{equation} \pdv{u}{t} = \pdv[2]{u}{x} \end{equation}

we have, with Dirichlet Conditions:

\begin{equation} u_{k}(t,x) = \sum b_{k} e^{ - \frac{k^{2} \pi^{2}}{l^{2}} t } \sin \qty( \frac{k \pi x}{l}) \end{equation}

and with Neumann Conditions:

\begin{equation} u_{k}(t,x) = \sum b_{k} e^{ - \frac{k^{2} \pi^{2}}{l^{2}} t } \cos \qty( \frac{k \pi x}{l}) \end{equation}

with infinite boundaries:

Hello Internet is a podcast hosted by Brady Haran and CGP Grey.

Herber Hoover is an American president.

Herber Hoover’s response to the Great Depression

• Hoover’s Programs: too little, too late
• Makes business pledge to maintain wages, tax cuts, Smoot-halwey Tariff, bank financial support
• Builds Golden Gate Bridge and the Hoover Dam
• Rejects the idea of the direct federal relief, which is against FDR’s thoughts