Multipliers on bi-parameter Haar system Hardy spaces
Bibliographic record
Abstract
Abstract Let $$(h_I)$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>(</mml:mo> <mml:msub> <mml:mi>h</mml:mi> <mml:mi>I</mml:mi> </mml:msub> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> denote the standard Haar system on [0, 1], indexed by $$I\in \mathcal {D}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>I</mml:mi> <mml:mo>∈</mml:mo> <mml:mi>D</mml:mi> </mml:mrow> </mml:math> , the set of dyadic intervals and $$h_I\otimes h_J$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>h</mml:mi> <mml:mi>I</mml:mi> </mml:msub> <mml:mo>⊗</mml:mo> <mml:msub> <mml:mi>h</mml:mi> <mml:mi>J</mml:mi> </mml:msub> </mml:mrow> </mml:math> denote the tensor product $$(s,t)\mapsto h_I(s) h_J(t)$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>s</mml:mi> <mml:mo>,</mml:mo> <mml:mi>t</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> <mml:mo>↦</mml:mo> <mml:msub> <mml:mi>h</mml:mi> <mml:mi>I</mml:mi> </mml:msub> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>s</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> <mml:msub> <mml:mi>h</mml:mi> <mml:mi>J</mml:mi> </mml:msub> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>t</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> </mml:mrow> </mml:math> , $$I,J\in \mathcal {D}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>I</mml:mi> <mml:mo>,</mml:mo> <mml:mi>J</mml:mi> <mml:mo>∈</mml:mo> <mml:mi>D</mml:mi> </mml:mrow> </mml:math> . We consider a class of two-parameter function spaces which are completions of the linear span $$\mathcal {V}(\delta ^2)$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>V</mml:mi> <mml:mo>(</mml:mo> <mml:msup> <mml:mi>δ</mml:mi> <mml:mn>2</mml:mn> </mml:msup> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> of $$h_I\otimes h_J$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>h</mml:mi> <mml:mi>I</mml:mi> </mml:msub> <mml:mo>⊗</mml:mo> <mml:msub> <mml:mi>h</mml:mi> <mml:mi>J</mml:mi> </mml:msub> </mml:mrow> </mml:math> , $$I,J\in \mathcal {D}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>I</mml:mi> <mml:mo>,</mml:mo> <mml:mi>J</mml:mi> <mml:mo>∈</mml:mo> <mml:mi>D</mml:mi> </mml:mrow> </mml:math> . This class contains all the spaces of the form X ( Y ), where X and Y are either the Lebesgue spaces $$L^p[0,1]$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msup> <mml:mi>L</mml:mi> <mml:mi>p</mml:mi> </mml:msup> <mml:mrow> <mml:mo>[</mml:mo> <mml:mn>0</mml:mn> <mml:mo>,</mml:mo> <mml:mn>1</mml:mn> <mml:mo>]</mml:mo> </mml:mrow> </mml:mrow> </mml:math> or the Hardy spaces $$H^p[0,1]$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msup> <mml:mi>H</mml:mi> <mml:mi>p</mml:mi> </mml:msup> <mml:mrow> <mml:mo>[</mml:mo> <mml:mn>0</mml:mn> <mml:mo>,</mml:mo> <mml:mn>1</mml:mn> <mml:mo>]</mml:mo> </mml:mrow> </mml:mrow> </mml:math> , $$1\le p < \infty $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>1</mml:mn> <mml:mo>≤</mml:mo> <mml:mi>p</mml:mi> <mml:mo><</mml:mo> <mml:mi>∞</mml:mi> </mml:mrow> </mml:math> . We say that $$D:X(Y)\rightarrow X(Y)$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>D</mml:mi> <mml:mo>:</mml:mo> <mml:mi>X</mml:mi> <mml:mo>(</mml:mo> <mml:mi>Y</mml:mi> <mml:mo>)</mml:mo> <mml:mo>→</mml:mo> <mml:mi>X</mml:mi> <mml:mo>(</mml:mo> <mml:mi>Y</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> is a Haar multiplier if $$D(h_I\otimes h_J) = d_{I,J} h_I\otimes h_J$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>D</mml:mi> <mml:mrow> <mml:mo>(</mml:mo> <mml:msub> <mml:mi>h</mml:mi> <mml:mi>I</mml:mi> </mml:msub> <mml:mo>⊗</mml:mo> <mml:msub> <mml:mi>h</mml:mi> <mml:mi>J</mml:mi> </mml:msub> <mml:mo>)</mml:mo> </mml:mrow> <mml:mo>=</mml:mo> <mml:msub> <mml:mi>d</mml:mi> <mml:mrow> <mml:mi>I</mml:mi> <mml:mo>,</mml:mo> <mml:mi>J</mml:mi> </mml:mrow> </mml:msub> <mml:msub> <mml:mi>h</mml:mi> <mml:mi>I</mml:mi> </mml:msub> <mml:mo>⊗</mml:mo> <mml:msub> <mml:mi>h</mml:mi> <mml:mi>J</mml:mi> </mml:msub> </mml:mrow> </mml:math> , where $$d_{I,J}\in \mathbb {R}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>d</mml:mi> <mml:mrow> <mml:mi>I</mml:mi> <mml:mo>,</mml:mo> <mml:mi>J</mml:mi> </mml:mrow> </mml:msub> <mml:mo>∈</mml:mo> <mml:mi>R</mml
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.002 | 0.024 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; both teacher heads agree on what is shown here.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".