Pith Number

pith:OJW3OZIU

pith:2018:OJW3OZIU7XHU2GNDCEZNGGFUF3

not attested not anchored not stored refs pending

Sufficient conditions for local solvability of some degenerate PDO with complex subprincipal symbol

Serena Federico

arxiv:1806.11394 v2 · 2018-06-29 · 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{OJW3OZIU7XHU2GNDCEZNGGFUF3}

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	2026-05-17T23:41:53.964575Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

726db76514fdcf4d19a31132d318b42ee456929681f85f7d68e2242725fb1002

Aliases

arxiv: 1806.11394 · arxiv_version: 1806.11394v2 · doi: 10.48550/arxiv.1806.11394 · pith_short_12: OJW3OZIU7XHU · pith_short_16: OJW3OZIU7XHU2GND · pith_short_8: OJW3OZIU

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/OJW3OZIU7XHU2GNDCEZNGGFUF3 \
  | 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: 726db76514fdcf4d19a31132d318b42ee456929681f85f7d68e2242725fb1002

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1f8d030f45c00e9cad9290522171d2aef0e102bc489ada880a303ca18599b44",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-06-29T13:06:37Z",
    "title_canon_sha256": "d24968fbd3cd5e977d5299c1dcc4b8f283bc18a53c4e0c856267ada5a86c240e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.11394",
    "kind": "arxiv",
    "version": 2
  }
}