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Joel David Hamkins
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Here is some general background information. The relevant search phrases for this topic are generalized cardinal invariants or generalized cardinal characteristics, and the topic has a growing literature, emerging over many years. The topic has been studied as folklore for some time.

Here are a few specific resources:

What you call $\mathfrak{d}_{\omega_1,\omega_1}$ is known as $\mathfrak{d}_{\omega_1}$. Your concept of $\mathfrak{d}_{\omega_1,\omega}$ is less studied.

Here is some general background information. The relevant search phrases for this topic are generalized cardinal invariants or generalized cardinal characteristics, and the topic has a growing literature, emerging over many years. The topic has been studied as folklore for some time.

Here are a few specific resources:

What you call $\mathfrak{d}_{\omega_1,\omega_1}$ is known as $\mathfrak{d}_{\omega_1}$. Your concept of $\mathfrak{d}_{\omega_1,\omega}$ is less studied.

Here is some general background information. The relevant search phrases for this topic are generalized cardinal invariants or generalized cardinal characteristics, and the topic has a growing literature, emerging over many years. The topic has been studied as folklore for some time.

Here are a few specific resources:

What you call $\mathfrak{d}_{\omega_1,\omega_1}$ is known as $\mathfrak{d}_{\omega_1}$. Your concept of $\mathfrak{d}_{\omega_1,\omega}$ is less studied.

Source Link
Joel David Hamkins
  • 236.3k
  • 44
  • 777
  • 1.4k

Here is some general background information. The relevant search phrases for this topic are generalized cardinal invariants or generalized cardinal characteristics, and the topic has a growing literature, emerging over many years. The topic has been studied as folklore for some time.

Here are a few specific resources:

What you call $\mathfrak{d}_{\omega_1,\omega_1}$ is known as $\mathfrak{d}_{\omega_1}$. Your concept of $\mathfrak{d}_{\omega_1,\omega}$ is less studied.