1 Conifold is presented by the following.

*n*-dimensional complex projective space that has homogeneous coordinates (z

_{1}, z

_{2}, … , z

_{n+1}) is given the following condition.

|z

_{1}|^{2}+| z_{2}|^{2}+ … + | z_{n+1}|^{2}= r r>0
There emerges 2

*n*+1-dimensional sphere*S*^{2n+1}.
On arbitrary

*θ*, when identification is done with the polar coordinate representation,**P***is presented.*^{n}
(z

_{1}, z_{2}, …, z_{n+1}) ~ (e*, e*^{iθ}z_{1}^{iθ}z_{2}, …*,*e*)*^{iθ}z_{n+1}**P**

^{1}that has line bundle’s direct sum

*O*(-1) ⊕

*O*(-1) is conifold.

**P**

^{1 }has homogeneous coordinates (

*z*

_{1},

*z*

_{2}) and line bundle coordinates (

*z*

_{3},

*z*

_{4}).

Conifold that is also called local

**P**^{1 }is defined by the following.
|z

_{1}|^{2}+| z_{2}|^{2}- | z_{3}|^{2}- | z_{4}|^{2}=*r*
When | z

_{3}|^{2}= | z_{4}|^{2}= 0, |z_{1}|^{2}+| z_{2}|^{2}= r is given as 2-dimensional sphere*S*^{2}that is called resolved conifold.
When complexification of parameter

*r*becomes 0, there emerges conifold with singularity.
From here, deformed conifold is given by the blowing up resolved conifold.

Deformed conifold has 3-dimensional sphere

*S*^{3}that wraps D6 brane.
Here

*S*^{3}is identificated to**word**. Brane is identificated to**grammar**.
Further now topology

**R**^{4}×*S*^{3}is presented.
This topology is identificated to

**sentence**.
[Reference]

**Tokyo June 9, 2007**

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