# Neumann boundary -- local or glocal

**URL:** https://community.freefem.org/t/neumann-boundary-local-or-glocal/766
**Category:** General Discussion
**Created:** [January 26, 2021, 9:09pm UTC](https://community.freefem.org/t/neumann-boundary-local-or-glocal/766 "2021-01-26T21:09:07Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![yongxing](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/yongxing/32/3632_2.png) [@yongxing](https://community.freefem.org/u/yongxing)
#### Post date: [January 26, 2021, 9:09pm UTC](https://community.freefem.org/t/neumann-boundary-local-or-glocal/766/1 "2021-01-26T21:09:07Z")

</div>

solve Elasticity([u, v], [uh, vh])  
= int2d(th)( …)  
+int1d(fx_uh + fy_vh)

Does (fx, fy) have the meaning of a global force – defined in global system?