Pith Number

pith:FIYAW4RB

pith:2018:FIYAW4RBI5QQQWH5X77HASYCNX

not attested not anchored not stored refs pending

The anisotropic Calder{\'o}n problem for singular metrics of warped product type: the borderline between uniqueness and invisibility

Francois Nicoleau (LMJL), Niky Kamran, Thierry Daude

arxiv:1805.05627 v1 · 2018-05-15 · math.AP · math-ph · math.MP · math.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FIYAW4RBI5QQQWH5X77HASYCNX}

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	2026-05-18T00:15:59.978571Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a300b722147610858fdbffe704b026de981603c2ea70af17e484a521a5964cf

Aliases

arxiv: 1805.05627 · arxiv_version: 1805.05627v1 · doi: 10.48550/arxiv.1805.05627 · pith_short_12: FIYAW4RBI5QQ · pith_short_16: FIYAW4RBI5QQQWH5 · pith_short_8: FIYAW4RB

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/FIYAW4RBI5QQQWH5X77HASYCNX \
  | 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: 2a300b722147610858fdbffe704b026de981603c2ea70af17e484a521a5964cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cbc8ea6c8b5618cc4466f01aadf7ea0c96bf99c5bb49c02529c9b9c2de9829d6",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP",
      "math.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-05-15T08:18:50Z",
    "title_canon_sha256": "8634288d0095e98cc14ef0378320fcc1c93c7f6ace4846869602bf47b4f21df2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.05627",
    "kind": "arxiv",
    "version": 1
  }
}