meaning of an "*" after this variable?

[sed1]

Hello guys, I study biology and recently I check this publication that made me crazy...

its a ecosystem math model, the ecuation is the following:

dF/dt=w(F)F(1-F)-vF


w(F) is a function about the fire and his efects in the forest, vF i think is just v x F...

v is the rate forest turns in grasslands

F+G=1

F is the proportion of forest

G is the proportion of grassland

and they said that that ecuation has 2 stable states: when F*=0 and when F*>0....

I dont understand whats the meaning of that "*", could you pleasee help me!!

many thanks in advance!!!

 

[Ishuda]

Hello guys, I study biology and recently I check this publication that made me crazy...

its a ecosystem math model, the ecuation is the following:

dF/dt=w(F)F(1-F)-vF


w(F) is a function about the fire and his efects in the forest, vF i think is just v x F...

v is the rate forest turns in grasslands

F+G=1

F is the proportion of forest

G is the proportion of grassland

and they said that that ecuation has 2 stable states: when F*=0 and when F*>0....

I dont understand whats the meaning of that "*", could you pleasee help me!!

many thanks in advance!!!

Looking at (what I think may be) the report
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3776969/
I would say that it is just an indication of a particular F. That is, that F for which dF/dt =0 is F* and is a point of equilibrium.

 

[sed1]

thanks! but..

Looking at (what I think may be) the report
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3776969/
I would say that it is just an indication of a particular F. That is, that F for which dF/dt =0 is F* and is a point of equilibrium.

Thanks my friend, thats indeed the paper. But.. alright, lets say f*=0 means what you said.. in certain part of the paper, they say this:

when f*>0 then w(f)(f-1)=v... And I dont get it, its not supossed that to could be that true, df/dt should be equal to 0, am I wrong?

What do you think?