Pith Number

pith:NFJLONLJ

pith:2019:NFJLONLJ2AIYYHX4SLG6AB4L3Z

not attested not anchored not stored refs pending

Travel time tomography with formally determined incomplete data in 3D

Michael V. Klibanov

arxiv:1904.06610 v1 · 2019-04-14 · 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{NFJLONLJ2AIYYHX4SLG6AB4L3Z}

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	2026-05-17T23:48:38.658765Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6952b73569d0118c1efc92cde0078bde5622b2365ba4bb6edc42aa9989502121

Aliases

arxiv: 1904.06610 · arxiv_version: 1904.06610v1 · doi: 10.48550/arxiv.1904.06610 · pith_short_12: NFJLONLJ2AIY · pith_short_16: NFJLONLJ2AIYYHX4 · pith_short_8: NFJLONLJ

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/NFJLONLJ2AIYYHX4SLG6AB4L3Z \
  | 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: 6952b73569d0118c1efc92cde0078bde5622b2365ba4bb6edc42aa9989502121

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e55c768c4e67551c349650bafef0f52014c54dda8002d90d018c664e9d067633",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-04-14T00:07:44Z",
    "title_canon_sha256": "59c79b18176b6b9dac697738ac4ba01cbd085ffa90b9090f860e1f4518953d18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.06610",
    "kind": "arxiv",
    "version": 1
  }
}