Pith Number

pith:XPO4PANF

pith:2016:XPO4PANFIUNPQKZYVIMS5QPX6O

not attested not anchored not stored refs pending

On the stability of first order PDEs associated to vector fields

Maysam Maysami Sadr

arxiv:1604.03279 v3 · 2016-04-12 · math.AP · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XPO4PANFIUNPQKZYVIMS5QPX6O}

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	2026-05-18T00:43:43.635636Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbddc781a5451af82b38aa192ec1f7f3afa7bdb0acb0ac85232981a1b01fa49c

Aliases

arxiv: 1604.03279 · arxiv_version: 1604.03279v3 · doi: 10.48550/arxiv.1604.03279 · pith_short_12: XPO4PANFIUNP · pith_short_16: XPO4PANFIUNPQKZY · pith_short_8: XPO4PANF

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/XPO4PANFIUNPQKZYVIMS5QPX6O \
  | 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: bbddc781a5451af82b38aa192ec1f7f3afa7bdb0acb0ac85232981a1b01fa49c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d42566ad45b4b95a47e4e591c53c57b9c5cd49ed7235578f9f418a8df9c22be",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2016-04-12T08:01:02Z",
    "title_canon_sha256": "365855481f848bae569e3777e9548f50c9722df1bb637443e196b1c4d200ea85"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.03279",
    "kind": "arxiv",
    "version": 3
  }
}