Pith Number

pith:XFDQYRNF

pith:2019:XFDQYRNFVQGAXPPYLVRG3EA262

not attested not anchored not stored refs pending

Stability of Critical p-Improper Interval Graphs

Jeffrey Beyerl

arxiv:1903.06767 v1 · 2019-03-15 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XFDQYRNFVQGAXPPYLVRG3EA262}

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	2026-05-17T23:51:09.091796Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9470c45a5ac0c0bbdf85d626d901af6b7ecabc78959acc5362f04c7ba57f4fa

Aliases

arxiv: 1903.06767 · arxiv_version: 1903.06767v1 · doi: 10.48550/arxiv.1903.06767 · pith_short_12: XFDQYRNFVQGA · pith_short_16: XFDQYRNFVQGAXPPY · pith_short_8: XFDQYRNF

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/XFDQYRNFVQGAXPPYLVRG3EA262 \
  | 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: b9470c45a5ac0c0bbdf85d626d901af6b7ecabc78959acc5362f04c7ba57f4fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "086f751e27af7abf09820f7c309db705a38cfcaf179a062cac8637e936dc3bdf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-03-15T19:15:51Z",
    "title_canon_sha256": "cc7c5399265ca21ce7f0dc4f1749900e7d4140cf69ca978f8eaa8352083040c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.06767",
    "kind": "arxiv",
    "version": 1
  }
}