Pith Number

pith:FTP7SYJ3

pith:2016:FTP7SYJ3MIJNDV7R3SWHQ3TRR5

not attested not anchored not stored refs pending

On the sign-regularity of positive fourth-order differential operators

A.A. Vladimirov

arxiv:1601.05984 v2 · 2016-01-22 · math.CA · math.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FTP7SYJ3MIJNDV7R3SWHQ3TRR5}

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	2026-05-18T01:22:05.255678Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2cdff9613b6212d1d7f1dcac786e718f455d3be3410de730fa2484655594efa7

Aliases

arxiv: 1601.05984 · arxiv_version: 1601.05984v2 · doi: 10.48550/arxiv.1601.05984 · pith_short_12: FTP7SYJ3MIJN · pith_short_16: FTP7SYJ3MIJNDV7R · pith_short_8: FTP7SYJ3

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/FTP7SYJ3MIJNDV7R3SWHQ3TRR5 \
  | 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: 2cdff9613b6212d1d7f1dcac786e718f455d3be3410de730fa2484655594efa7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8894c798ebd4a1002fedc98b6a46172a71014cab86a44ca65afab5af77c45266",
    "cross_cats_sorted": [
      "math.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2016-01-22T13:02:58Z",
    "title_canon_sha256": "875e6995489fd24165d7ea414c2d52b41f32885ac5851c02699673b75bef791c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.05984",
    "kind": "arxiv",
    "version": 2
  }
}