Pith Number

pith:ST7WN2J2

pith:2013:ST7WN2J2KZ5RMCXZVD6DSHHGWJ

not attested not anchored not stored refs pending

Lorentz estimates for obstacle parabolic problems

Paolo Baroni

arxiv:1311.1230 v1 · 2013-11-05 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ST7WN2J2KZ5RMCXZVD6DSHHGWJ}

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	2026-05-18T03:07:53.965494Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

94ff66e93a567b160af9a8fc391ce6b26d62df94c1feb603e38b1cb374f63759

Aliases

arxiv: 1311.1230 · arxiv_version: 1311.1230v1 · doi: 10.48550/arxiv.1311.1230 · pith_short_12: ST7WN2J2KZ5R · pith_short_16: ST7WN2J2KZ5RMCXZ · pith_short_8: ST7WN2J2

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/ST7WN2J2KZ5RMCXZVD6DSHHGWJ \
  | 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: 94ff66e93a567b160af9a8fc391ce6b26d62df94c1feb603e38b1cb374f63759

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ab5675305e5a6ad7c8bbb73677c558b0235e041912c0d4c6a42e44a7c58d706",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2013-11-05T21:51:00Z",
    "title_canon_sha256": "ae212ef4ec984e6866026d62c3e9f5139ef51b4f0c699eb55b0452b46c696c75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.1230",
    "kind": "arxiv",
    "version": 1
  }
}