Pith Number

pith:FTTUCYGT

pith:2016:FTTUCYGTC35HQGLGULZDWAWBMG

not attested not anchored not stored refs pending

A globally convergent numerical method for a 3D coefficient inverse problem with a single measurement of multi-frequency data

Dinh-Liem Nguyen, Hui Liu, Loc H. Nguyen, Michael V. Klibanov

arxiv:1612.04014 v1 · 2016-12-13 · 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{FTTUCYGTC35HQGLGULZDWAWBMG}

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	2026-05-18T00:55:05.838397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ce74160d316fa781966a2f23b02c161b54d0bd69795a7466377eaf0008f609e

Aliases

arxiv: 1612.04014 · arxiv_version: 1612.04014v1 · doi: 10.48550/arxiv.1612.04014 · pith_short_12: FTTUCYGTC35H · pith_short_16: FTTUCYGTC35HQGLG · pith_short_8: FTTUCYGT

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/FTTUCYGTC35HQGLGULZDWAWBMG \
  | 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: 2ce74160d316fa781966a2f23b02c161b54d0bd69795a7466377eaf0008f609e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "592cad76eb80a18b332b7c8dbc19b49a0ac16f5488601bca82869233a3497722",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-12-13T03:34:51Z",
    "title_canon_sha256": "f9d67c3a005ee90112df9c9b3ba305cf2d7b164816b456c570f0d346654f91b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.04014",
    "kind": "arxiv",
    "version": 1
  }
}