Pith Number

pith:EGDSTUOB

pith:2011:EGDSTUOBVIAPQ3PU5PPLM3WKPD

not attested not anchored not stored refs pending

Quasiderivative method for derivative estimates of solutions to degenerate elliptic equations

Wei Zhou

arxiv:1112.5689 v2 · 2011-12-24 · math.PR · 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{EGDSTUOBVIAPQ3PU5PPLM3WKPD}

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	2026-05-18T03:32:17.910297Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

218729d1c1aa00f86df4ebdeb66eca78c2004af6afbbd55487fc71b8d442e9bc

Aliases

arxiv: 1112.5689 · arxiv_version: 1112.5689v2 · doi: 10.48550/arxiv.1112.5689 · pith_short_12: EGDSTUOBVIAP · pith_short_16: EGDSTUOBVIAPQ3PU · pith_short_8: EGDSTUOB

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/EGDSTUOBVIAPQ3PU5PPLM3WKPD \
  | 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: 218729d1c1aa00f86df4ebdeb66eca78c2004af6afbbd55487fc71b8d442e9bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7b67ecb03039c66e73c2754613e5f37a201e61a2a5df61135d81acb52ac3e9e",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.PR",
    "submitted_at": "2011-12-24T02:59:11Z",
    "title_canon_sha256": "4062c980f43dc99e7401932612ec83ab4b4a10f48f76342ecbc5bf056234944f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.5689",
    "kind": "arxiv",
    "version": 2
  }
}