If I write the following in stan file, then what priors are used by `rstan::stan()`

? In model block I do not write any distributions for parameters `m,v`

.

I think for parameter `m`

the constant function is used.

I think for parameter `v`

the constant function which is one on the interval [o,\infty] and 0 on otherwise.

Or is it used the inverse gamma? I am not sure what priors are used?

```
parameters{
real m;
real <lower=0>v;
}
```

- Operating System: Win 10
- brms Version:

Constant over the ranges specified in the parameters block.

Please let me know the following.

Suppose that

```
parameters{
real <lower= 0, upper= 1 > v;
}
```

Then, which does the support of the uniform prior of `v`

correspond the following:

- closed interval [0,1]
- open interval (0,1)

Closed, but it doesn’t matter

i appreciate for rapid reply. I think “it doesn’t matter” means that the value in the endpoints of the interval never be chosen in numerical process. But I want to write some paper, so theoretically, I want to know it !! Thank you !!