Pith Number

pith:VJ7WT2OC

pith:2012:VJ7WT2OCCLCNN3WQ52PWT2JYMC

not attested not anchored not stored refs pending

Instability of the linearized problem in multiwave tomography of recovery both the source and the speed

Gunther Uhlmann, Plamen Stefanov

arxiv:1211.6217 v1 · 2012-11-27 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VJ7WT2OCCLCNN3WQ52PWT2JYMC}

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	2026-05-18T03:39:52.245677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa7f69e9c212c4d6eed0ee9f69e93860951f249811f2850fedbc9dccafd0d917

Aliases

arxiv: 1211.6217 · arxiv_version: 1211.6217v1 · doi: 10.48550/arxiv.1211.6217 · pith_short_12: VJ7WT2OCCLCN · pith_short_16: VJ7WT2OCCLCNN3WQ · pith_short_8: VJ7WT2OC

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/VJ7WT2OCCLCNN3WQ52PWT2JYMC \
  | 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: aa7f69e9c212c4d6eed0ee9f69e93860951f249811f2850fedbc9dccafd0d917

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b5c545f7d5ad2cceeab1ef2fbd6b1585f0fa9e63c4588aac6224f527c48a60e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2012-11-27T05:47:25Z",
    "title_canon_sha256": "802bedf25a218b977126355f7fa70f3990f09da0f3036c50ac6ca75bf12e8f6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.6217",
    "kind": "arxiv",
    "version": 1
  }
}