Clusters have long been regarded as an important laboratory for studying galaxy formation, and a power cosmological probe. In this meeting we will try to answer some of the fundamental questions regarding clusters:

1. • How do the cluster galaxy populations come into place? In particular, what is the formation and assembly history of the most massive galaxies in the universe, the brightest cluster galaxies?
   

2. • How do galaxies and hot instracluster medium (ICM) interact with each other throughout the lifetime of clusters?
   

3. • How to realize the cosmological constraining power from cluster surveys, taking into account effects of galaxy formation and evolution of ICM?
   

Studies of clusters shouldn't be divided by wavelength, as the various components of clusters (galaxies, ICM, dark matter, etc) share intertwined evolution paths. The goal of this meeting is to provide an opportunity for discussing how we can use multi-wavelength data to address these topics and to identify the important outstanding theoretical issues that may limit our ability to fully exploit the upcoming large cluster data sets.

We are planning a 5-day meeting, to be held in the last week of June 2010, in the Kashiwa campus of the University of Tokyo. The venue is the Institute for the Physics and Mathematics of the Universe, a new and energetic research center of the University of Tokyo, located in Kashiwa. We are aiming for an international conference of order 100 participants, including about 20 world renowned experts as invited speakers. The focuses of the meeting are:

1. • Cosmological evolution of cluster galaxies
   

2. • Co-evolution of galaxies and ICM
   

3. • Clusters as a precision cosmological probe
   

4. • Other cosmological probes complementary to clusters