Pith Number

pith:ZUUYJGFF

pith:2012:ZUUYJGFFNVXLNSVJ64ZPH7EBUY

not attested not anchored not stored refs pending

On a level-set method for ill-posed problems with piecewise non-constant coefficients

Adriano De Cezaro

arxiv:1207.2572 v2 · 2012-07-11 · math.NA · math.AP · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZUUYJGFFNVXLNSVJ64ZPH7EBUY}

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	2026-05-18T03:42:11.196420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd298498a56d6eb6caa9f732f3fc81a614bf4f4af836722ff5ae8cd63d91f9d4

Aliases

arxiv: 1207.2572 · arxiv_version: 1207.2572v2 · doi: 10.48550/arxiv.1207.2572 · pith_short_12: ZUUYJGFFNVXL · pith_short_16: ZUUYJGFFNVXLNSVJ · pith_short_8: ZUUYJGFF

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/ZUUYJGFFNVXLNSVJ64ZPH7EBUY \
  | 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: cd298498a56d6eb6caa9f732f3fc81a614bf4f4af836722ff5ae8cd63d91f9d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e1abba4e82ce857c96b72cf3cef079c6decb8eaeffa5548d8f19c722672204d",
    "cross_cats_sorted": [
      "math.AP",
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-07-11T09:40:04Z",
    "title_canon_sha256": "b37af90c4c0e7bfe91d9357358dd3463a0061164f56412d74aa36a2c54cb29e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.2572",
    "kind": "arxiv",
    "version": 2
  }
}