Pith Number

pith:ZZXSEQFK

pith:2017:ZZXSEQFKDZMY6736GC4K5NAI4Z

not attested not anchored not stored refs pending

Local solvability of a class of degenerate second order operators

Serena Federico

arxiv:1709.09549 v1 · 2017-09-27 · 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{ZZXSEQFKDZMY6736GC4K5NAI4Z}

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	2026-05-17T23:41:56.576037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce6f2240aa1e598f7f7e30b8aeb408e64a730330c62c82715bcbb88488852cf9

Aliases

arxiv: 1709.09549 · arxiv_version: 1709.09549v1 · doi: 10.48550/arxiv.1709.09549 · pith_short_12: ZZXSEQFKDZMY · pith_short_16: ZZXSEQFKDZMY6736 · pith_short_8: ZZXSEQFK

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/ZZXSEQFKDZMY6736GC4K5NAI4Z \
  | 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: ce6f2240aa1e598f7f7e30b8aeb408e64a730330c62c82715bcbb88488852cf9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6ebd96407eec0d84f292d02a39769b1987f0e4f93e1cc2829c18bf03094c5c7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2017-09-27T14:21:36Z",
    "title_canon_sha256": "6446273cb1274bdccb29d1dc3d1a6e7fb14ed8f7baf95d67f6a79dd0ae4f05b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.09549",
    "kind": "arxiv",
    "version": 1
  }
}