Pith Number

pith:MHFTUPAO

pith:2017:MHFTUPAOZUGUQUL4VIYRP3XRBG

not attested not anchored not stored refs pending

The Calder\'on problem with corrupted data

Andoni Garcia, Pedro Caro

arxiv:1701.02244 v2 · 2017-01-09 · math.AP · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MHFTUPAOZUGUQUL4VIYRP3XRBG}

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	2026-05-18T00:41:37.628672Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61cb3a3c0ecd0d48517caa3117eef109a0e7e014a0c4ebd44833319b9f9e1a24

Aliases

arxiv: 1701.02244 · arxiv_version: 1701.02244v2 · doi: 10.48550/arxiv.1701.02244 · pith_short_12: MHFTUPAOZUGU · pith_short_16: MHFTUPAOZUGUQUL4 · pith_short_8: MHFTUPAO

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/MHFTUPAOZUGUQUL4VIYRP3XRBG \
  | 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: 61cb3a3c0ecd0d48517caa3117eef109a0e7e014a0c4ebd44833319b9f9e1a24

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a1fd0157157bd04c9497d8a21dd82ffa6993080bf3dbf4f6a522166b46edd44",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2017-01-09T16:25:30Z",
    "title_canon_sha256": "c17e987f7744e5cc2888cdb780a5b3d940930866b06f0526e6e3d49a29435208"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.02244",
    "kind": "arxiv",
    "version": 2
  }
}