Pith Number

pith:LYV4Q7EU

pith:2012:LYV4Q7EUJ5VHW2CSVL24FCIHOH

not attested not anchored not stored refs pending

Iterative algorithms for total variation-like reconstructions in seismic tomography

Caroline Verhoeven, Ignace Loris

arxiv:1203.4451 v2 · 2012-03-20 · physics.geo-ph · math.NA · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LYV4Q7EUJ5VHW2CSVL24FCIHOH}

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	2026-05-18T03:58:25.959827Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e2bc87c944f6a7b6852aaf5c2890771f7a894c31f93c6c9f352346d6b99ca6a

Aliases

arxiv: 1203.4451 · arxiv_version: 1203.4451v2 · doi: 10.48550/arxiv.1203.4451 · pith_short_12: LYV4Q7EUJ5VH · pith_short_16: LYV4Q7EUJ5VHW2CS · pith_short_8: LYV4Q7EU

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/LYV4Q7EUJ5VHW2CSVL24FCIHOH \
  | 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: 5e2bc87c944f6a7b6852aaf5c2890771f7a894c31f93c6c9f352346d6b99ca6a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2f20637babe67e582450627fdc7e47c9f0de6a75537e9086bd515419e0922e7",
    "cross_cats_sorted": [
      "math.NA",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2012-03-20T14:35:04Z",
    "title_canon_sha256": "fac92e9dc3ded3a717f457a9f088ac87151507e73e4cd79e85dfcb045add2175"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.4451",
    "kind": "arxiv",
    "version": 2
  }
}