Pith Number

pith:X557WMY3

pith:2019:X557WMY32UAG7GAZWE2RR7H4A5

not attested not anchored not stored refs pending

Induced matchings in strongly biconvex graphs and some algebraic applications

Dariush Kiani, Sara Saeedi Madani

arxiv:1905.02640 v1 · 2019-05-07 · math.AC · 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{X557WMY32UAG7GAZWE2RR7H4A5}

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	2026-05-17T23:46:50.844715Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf7bfb331bd5006f9819b13518fcfc077e11816681ce3f0434e24f50039c3bf0

Aliases

arxiv: 1905.02640 · arxiv_version: 1905.02640v1 · doi: 10.48550/arxiv.1905.02640 · pith_short_12: X557WMY32UAG · pith_short_16: X557WMY32UAG7GAZ · pith_short_8: X557WMY3

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/X557WMY32UAG7GAZWE2RR7H4A5 \
  | 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: bf7bfb331bd5006f9819b13518fcfc077e11816681ce3f0434e24f50039c3bf0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07049c429bbf1ffe35017a46b8c0132c5731a19a5a1e86d8b229fae1b391633d",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AC",
    "submitted_at": "2019-05-07T15:30:58Z",
    "title_canon_sha256": "8afd7d568547ea002ee5e930da09cf6e2582af37d5df849bd7b2f99c0823fe16"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.02640",
    "kind": "arxiv",
    "version": 1
  }
}