Pith Number

pith:3MLX45JK

pith:2017:3MLX45JK3Z7FBGYSXWVMHUYNVM

not attested not anchored not stored refs pending

On an inverse boundary problem arising in brain imaging

Gunther Uhlmann, Hongyu Liu, Youjun Deng

arxiv:1702.00154 v3 · 2017-02-01 · math.AP · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3MLX45JK3Z7FBGYSXWVMHUYNVM}

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	2026-05-18T00:32:13.901833Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db177e752ade7e509b12bdaac3d30dab3081de782e0287e449ba35c1b5cf285f

Aliases

arxiv: 1702.00154 · arxiv_version: 1702.00154v3 · doi: 10.48550/arxiv.1702.00154 · pith_short_12: 3MLX45JK3Z7F · pith_short_16: 3MLX45JK3Z7FBGYS · pith_short_8: 3MLX45JK

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/3MLX45JK3Z7FBGYSXWVMHUYNVM \
  | 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: db177e752ade7e509b12bdaac3d30dab3081de782e0287e449ba35c1b5cf285f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a1fbcc1cb4cff8ba23cf43477a619031353e024a7c5cceac855c6a5b5e2c89c",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2017-02-01T08:05:07Z",
    "title_canon_sha256": "330782754c8170a0037507c0ac343c1126e84a54746f53df7dfe3328ecfb6e2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.00154",
    "kind": "arxiv",
    "version": 3
  }
}