Pith Number

pith:SQZYHQXN

pith:2015:SQZYHQXNGLWN7CEXQQ7CAUQFS7

not attested not anchored not stored refs pending

Non-commutative Edmonds' problem and matrix semi-invariants

G\'abor Ivanyos, K. V. Subrahmanyam, Youming Qiao

arxiv:1508.00690 v2 · 2015-08-04 · cs.DS · cs.CC · math.AC · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SQZYHQXNGLWN7CEXQQ7CAUQFS7}

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	2026-05-18T01:12:20.007927Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

943383c2ed32ecdf8897843e20520597fe9b8833eb5d5a7680d1cd3c85ae4199

Aliases

arxiv: 1508.00690 · arxiv_version: 1508.00690v2 · doi: 10.48550/arxiv.1508.00690 · pith_short_12: SQZYHQXNGLWN · pith_short_16: SQZYHQXNGLWN7CEX · pith_short_8: SQZYHQXN

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/SQZYHQXNGLWN7CEXQQ7CAUQFS7 \
  | 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: 943383c2ed32ecdf8897843e20520597fe9b8833eb5d5a7680d1cd3c85ae4199

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da8212d28a7914d362ea7258d24a0ec0cb0063d97d3376ef07a79fdcdec39e1e",
    "cross_cats_sorted": [
      "cs.CC",
      "math.AC",
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-08-04T07:39:16Z",
    "title_canon_sha256": "1184576726eaba362152f55a63d3858188d4c618a12fde2cac1ff367d437d198"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.00690",
    "kind": "arxiv",
    "version": 2
  }
}