Can i connect my iMac to a mac mini (wirelessly) and control the mac mini display on my TV?

Look up "screen sharing" in help

You can control your mini (which I am assuming you are hooking to your TV) complete from your iMac.

After you set up screen sharing, you can go to the finder, under the "go" menu choose "Connect to server" and then browse. Choose your mac mini's name, and look for the "Screen Sharing" button.

1. Choose Apple menu > System Preferences, and then click Sharing.
2. Select the Screen Sharing checkbox.
3. To specify who can share your screen, select one of the following:

   All users:

   Select this if you want to allow any user with a user account on your computer to share your screen.

   Only these users:

   Select this if you want to restrict screen sharing to specific users.Click Add ➕ at the bottom of the Users list and select a user from Users & Groups (accounts you have set up in Users & Groups preferences), Network Users (users on your network), or your Address Book. Or click New Person and enter a name and password to create a sharing account. Then select that user from the list, and then click Select.

4. Click Computer Settings and set the following options:

   Anyone may request permission to control screen:	Select this to allow anyone on your network to request to share your screen.
   VNC viewers may control screen with password:	Select this and enter a password that VNC viewer applications can enter in order to control your screen.It’s recommended that you not set a password if you only share this computer’s screen using the built-in screen sharing viewer in Mac OS X.