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Resize Project 11 eqns again
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Project#11/README.md

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The purpose of this project is to consider and implement an "out-of-core" SCF
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algorithm, that is, an approach that minimizes the core-memory requirements of
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the program by reading the two-electron repulsion integrals from disk in
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batches when only they are needed.((An alternative approach is the so-called
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batches when only they are needed (An alternative approach is the so-called
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"direct" SCF, in which the two-electron integrals are re-computed in each SCF
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iteration rather than stored on disk.))
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iteration rather than stored on disk)
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## The Fock Matrix Build
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At the heart of the SCF procedure is the expensive Fock-matrix term:
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<img src="./figures/fock-matrix.png" height="75">
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<img src="./figures/fock-matrix.png" height="60">
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where we use *i*, *j*, *k*, and *l* to denote AO-basis indices. As described
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in [Project #3](https://github.com/CrawfordGroup/ProgrammingProjects/tree/master/Project%2303), a simple algorithm for
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evaluating this matrix is:
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in [Project #3](../Project%2303), a simple algorithm for evaluating this matrix is:
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```cpp
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for(i=0; i < nao; i++)
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This algorithm hinges on the fact that all the two-electron integrals are
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immediately available in the TEI array (which takes advantage of permutational
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symmetry). In
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[Project #7](https://github.com/CrawfordGroup/ProgrammingProjects/tree/master/Project%2307)
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you made use of the following code, which reads the integrals into the TEI
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array in batches (sometimes referred to in PSI as "buffers"):
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symmetry). In [Project #7](../Project%2307) you made use of the following code,
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which reads the integrals into the TEI array in batches (sometimes referred to
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in PSI as "buffers"):
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```cpp
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iwl_buf_init(&InBuf, PSIF_SO_TEI, 1e-14, 1, 0);
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All such cases must be included in the algorithm to obtain a correct Fock matrix.
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## Additional Reading
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* J. Almlof, K. Faegri, and K. Korsell, "Principles for a Direct SCF Approach to LCAO-MO //Ab Initio// Calculations," //J. Comp. Chem.// **3**, 385-399 (1982).
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* J. Almlof, K. Faegri, and K. Korsell, "Principles for a Direct SCF Approach to LCAO-MO *Ab Initio* Calculations," *J. Comp. Chem.* **3**, 385-399 (1982).
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