Pith Number

pith:HIUGTFBD

pith:2017:HIUGTFBDGOHT2MSBM67PLEKUOW

not attested not anchored not stored refs pending

Landis' conjecture for general second order elliptic equations with singular lower order terms in the plane

Blair Davey, Jenn-Nan Wang

arxiv:1709.09042 v2 · 2017-09-26 · 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{HIUGTFBDGOHT2MSBM67PLEKUOW}

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	2026-05-18T00:13:47.556826Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a28699423338f3d324167bef5915475be281810a420b787d116140f5926adb4

Aliases

arxiv: 1709.09042 · arxiv_version: 1709.09042v2 · doi: 10.48550/arxiv.1709.09042 · pith_short_12: HIUGTFBDGOHT · pith_short_16: HIUGTFBDGOHT2MSB · pith_short_8: HIUGTFBD

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/HIUGTFBDGOHT2MSBM67PLEKUOW \
  | 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: 3a28699423338f3d324167bef5915475be281810a420b787d116140f5926adb4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1609ecccff33d1f5d30fda3bad04242292d4fa2c6fc0ebc6e96693b50a57025",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2017-09-26T14:29:56Z",
    "title_canon_sha256": "45a1147669382ea5e8420643596ad0ab35050a1ce9a2cce50fa248e3482324a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.09042",
    "kind": "arxiv",
    "version": 2
  }
}