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1.Gauge Choice in space time
2. Procedure to fine apparent horizons
3.How do we choose gauge at spatial infinity?
4.Quasi-local mass
5.Positivity of Quasi-local mass
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II Noether Charge Realization of diff(M) Algebra and
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  B Noether Charge Realization of diff(M) & KS . . . . . 10
III On Mass Formula and Entropy as Noether Charges 15
IV First Law of BHM via Vertical-Horizontal Bi-Variation 22
V Conclusion Remarks 27

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