Pith Number

pith:5YDUGXZJ

pith:2004:5YDUGXZJDRO45XZ3HF4REC6EQ2

not attested not anchored not stored refs pending

Inverse conductivity problem with an imperfectly known boundary

Matti Lassas, Petri Ola, Ville Kolehmainen

arxiv:math/0408237 v1 · 2004-08-18 · math.AP · cs.NA · 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{5YDUGXZJDRO45XZ3HF4REC6EQ2}

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	2026-06-03T22:06:15.578529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee07435f291c5dcedf3b3979120bc4869e93596fe0c6eedb3100d84fc493bdad

Aliases

arxiv: math/0408237 · arxiv_version: math/0408237v1 · doi: 10.48550/arxiv.math/0408237 · pith_short_12: 5YDUGXZJDRO4 · pith_short_16: 5YDUGXZJDRO45XZ3 · pith_short_8: 5YDUGXZJ

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/5YDUGXZJDRO45XZ3HF4REC6EQ2 \
  | 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: ee07435f291c5dcedf3b3979120bc4869e93596fe0c6eedb3100d84fc493bdad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40d733f3365eb679b9bc382862d631e7e3c9657322d47bc17394e8da95c77c6b",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "",
    "primary_cat": "math.AP",
    "submitted_at": "2004-08-18T08:23:34Z",
    "title_canon_sha256": "4366e3428d421992cd1401c5d8f37630d19de36247163ef336254c81a9e32d78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0408237",
    "kind": "arxiv",
    "version": 1
  }
}