If both constructed bloom filters use the same seed and the same number of
hash functions, yes. Assuming the input filters were optimal for a given FP
rate, the resulting filter will be worse.

-- 
Pieter
 On 17 Aug 2013 16:01, "Jeff Garzik" <jgarzik@bitpay.com> wrote:

> Consider wallet A builds bloom filter A' and wallet B builds bloom
> filter B'.  Can A' and B' be or'd together to form a single bloom
> filter C' ?
>
> --
> Jeff Garzik
> Senior Software Engineer and open source evangelist
> BitPay, Inc.      https://bitpay.com/
>
>
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