T="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img104.gif"
 ALT="$\Delta$"> stands for a non-local component.

<P>
The keyword <code>b3lyp</code> specifies that the exchange-correlation energy
is computed as
<P></P>
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<!-- MATH
 \begin{eqnarray*}
E_{XC} \ &=& \ a_0 E^{\rm HF}_X + (1-a_0) E^{\rm Slater}_{X} +
a_X \Delta E^{\rm Becke88}_{X} + (1-a_C)E^{\rm VWN\_1\_RPA}_C + a_C E^{LYP}_C \\
& &{\rm where } \\
a_0 &=& 0.20, \ a_X = 0.72, \ a_C = 0.81
\end{eqnarray*}
 -->
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