Pith Number

pith:TC55BWBB

pith:2020:TC55BWBBSCRTYA2A5BGRK3AV2C

not attested not anchored not stored refs pending

Edmonds' problem and the membership problem for orbit semigroups of quiver representations

Calin Chindris, Daniel Kline

arxiv:2008.13648 v1 · 2020-08-31 · math.RT · cs.CC · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TC55BWBBSCRTYA2A5BGRK3AV2C}

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	2026-07-05T01:31:39.918609Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

98bbd0d82190a33c0340e84d156c15d08749e6605bc1354cbe2a8cfb92d9f56d

Aliases

arxiv: 2008.13648 · arxiv_version: 2008.13648v1 · doi: 10.48550/arxiv.2008.13648 · pith_short_12: TC55BWBBSCRT · pith_short_16: TC55BWBBSCRTYA2A · pith_short_8: TC55BWBB

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/TC55BWBBSCRTYA2A5BGRK3AV2C \
  | 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: 98bbd0d82190a33c0340e84d156c15d08749e6605bc1354cbe2a8cfb92d9f56d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fbde247f5c6f0d5295519063df9923c6d43f6806c11be43f61df1decbf2d9179",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RT",
    "submitted_at": "2020-08-31T14:36:34Z",
    "title_canon_sha256": "c0dfd91d780069ee17c65b372016db5a5dc781f504b6a30ebd4c4f2bc4fcb3f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.13648",
    "kind": "arxiv",
    "version": 1
  }
}