Pith Number

pith:F2H7VHDB

pith:2026:F2H7VHDBWKBCNKW2SLWKDQ4W2W

not attested not anchored not stored refs pending

From Halin's Edge Removability to Matching Removability in $k$-Connected Graphs

Hengzhe Li, Mingming Zhou, Shinya Fujita, Yaping Mao

arxiv:2605.24035 v1 · 2026-05-21 · 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{F2H7VHDBWKBCNKW2SLWKDQ4W2W}

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	2026-05-26T01:02:42.125693Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e8ffa9c61b28226aada92eca1c396d5b4a4149ef1487523fe33bcd71e54a5de

Aliases

arxiv: 2605.24035 · arxiv_version: 2605.24035v1 · doi: 10.48550/arxiv.2605.24035 · pith_short_12: F2H7VHDBWKBC · pith_short_16: F2H7VHDBWKBCNKW2 · pith_short_8: F2H7VHDB

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/F2H7VHDBWKBCNKW2SLWKDQ4W2W \
  | 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: 2e8ffa9c61b28226aada92eca1c396d5b4a4149ef1487523fe33bcd71e54a5de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a515ed4c0e81da8174f4b3c23a777425ff2cf340c83d0cc0fa7dca18527f8179",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2026-05-21T08:35:14Z",
    "title_canon_sha256": "f2dce17a2e3e687378d2aeb8fbedc0df039cf3a1ac279ece998a70d6c535e825"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.24035",
    "kind": "arxiv",
    "version": 1
  }
}