GAMS World Forum

Hi! https://pbs.twimg.com/media/F44_OLOaIAAkyCm?format=jpg&name=small in theory these are the vertices of a rectangle, generated by an NLP, the constraints are met but two vertices are always overlapped, (in the case are the ones in the circule), can you help me? how can i fix that? Thank you eq...

Hello, I´m using the solver BARON for a NLP Model
The constraints are convex but when in I use a option file that includes the option Equations.EquaClass=2, the results says "Bounds too wide" but without the option file i get a solution
Any idea why this happen?
regards

Hello again, I'm trying to define a set that incluides a grups of Multi-Dimensional Sets For example set p /1A, 11a, 12A/ L /1l/ A11(p,l); A11('1A','1l')=yes; A12('1A','1l')=yes; And define a new set with A11 and A12 as elements And I Tried this set p "producto" /1A, 11a, 12A/ L "acti...

Thank so much, that really helps, But, now i have another question about the same subsets but now in this equations https://embers-host.nyc3.digitaloceanspaces.com/uploads/media/51a0ef2c-f108-47ee-aa1a-3aa53c763e52_preview.jpg parameter D(i,j) sup(p,i,t) Integer Variables V(p,i,t) X(p,p',i,l,t) Z(p,...

Hi, My original questions about is how to write the subset, TF(I,P), TL(p) set P index set of products /1A,11A/ L index set of production activities /1L/ TF(I,P) ⊆ P, index Set of product variants generated by applying production activity L to product P TL(p) ⊆ L, index Set of production activities ...

Hello, I´m trying to model a model with this sets, image.png Could someone please help me how to write the subsets TF(l,p) and TL(p) P 'producto' /1A,11A,12A/ L 'actividades diferenciadoras' /1L,1A/ TF(l,p) 'productos diferenciados al aplicar actividad L en producto P' /1l,11A/ TL(p) 'actividades di...