Pith Number

pith:JFWDBLHQ

pith:2026:JFWDBLHQY2XLCNVZWRODIJHPVB

not attested not anchored not stored refs pending

Data-efficient semi-supervised learning for flow estimation using unlabelled probe data

Junwei Chen, Marco Raiola, Stefano Discetti

arxiv:2605.28245 v1 · 2026-05-27 · physics.flu-dyn

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JFWDBLHQY2XLCNVZWRODIJHPVB}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-28T01:05:03.913505Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

496c30acf0c6aeb136b9b45c3424efa8544a4e7259fc51142892b682dd1162a3

Aliases

arxiv: 2605.28245 · arxiv_version: 2605.28245v1 · doi: 10.48550/arxiv.2605.28245 · pith_short_12: JFWDBLHQY2XL · pith_short_16: JFWDBLHQY2XLCNVZ · pith_short_8: JFWDBLHQ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/JFWDBLHQY2XLCNVZWRODIJHPVB \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 496c30acf0c6aeb136b9b45c3424efa8544a4e7259fc51142892b682dd1162a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef85d2cdd4e022f507d3a368828c33aeeb74ddb0560783c616d22950a0920e68",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2026-05-27T09:57:24Z",
    "title_canon_sha256": "ea33e0b41558ab661a1de68b12c58db13ebe6a891e872aa019f6e52c3606763c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.28245",
    "kind": "arxiv",
    "version": 1
  }
}