Pith Number

pith:JEA3DCNQ

pith:2013:JEA3DCNQNZPFXTGBJGILUTZTJF

not attested not anchored not stored refs pending

A Data-Driven Edge-Preserving D-bar Method for Electrical Impedance Tomography

Andreas Hauptmann, Samuli Siltanen, Sarah Hamilton

arxiv:1312.5523 v2 · 2013-12-19 · 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{JEA3DCNQNZPFXTGBJGILUTZTJF}

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	2026-05-18T00:20:18.124751Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4901b189b06e5e5bccc14990ba4f334961b9d1d68cff2aa7c1687615d403d43b

Aliases

arxiv: 1312.5523 · arxiv_version: 1312.5523v2 · doi: 10.48550/arxiv.1312.5523 · pith_short_12: JEA3DCNQNZPF · pith_short_16: JEA3DCNQNZPFXTGB · pith_short_8: JEA3DCNQ

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/JEA3DCNQNZPFXTGBJGILUTZTJF \
  | 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: 4901b189b06e5e5bccc14990ba4f334961b9d1d68cff2aa7c1687615d403d43b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9247907fab75518087de7e9656e448493605c24b6c45be7d3d6bd88e43d940e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-12-19T12:59:53Z",
    "title_canon_sha256": "02825c9967704f52d416db1fdcbf7da33f9db8804e7ed0df2901b87df5da654e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.5523",
    "kind": "arxiv",
    "version": 2
  }
}