Pith Number

pith:BE4A3QTK

pith:2020:BE4A3QTKR7QOR5EN4XKUURAZDF

not attested not anchored not stored refs pending

On the hardness of code equivalence problems in rank metric

Alain Couvreur, Philippe Gaborit, Thomas Debris-Alazard

arxiv:2011.04611 v2 · 2020-11-09 · cs.IT · cs.CG · math.IT · math.RA

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Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BE4A3QTKR7QOR5EN4XKUURAZDF}

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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.

Cited by

1 paper in Pith

New invariants for rank metric codes, with applications to the classification of rank two semifields of order 256

Receipt and verification

First computed	2026-07-05T02:48:09.726293Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09380dc26a8fe0e8f48de5d54a4419196d1c064d962a9f01f02f05d3ad3c5a5f

Aliases

arxiv: 2011.04611 · arxiv_version: 2011.04611v2 · doi: 10.48550/arxiv.2011.04611 · pith_short_12: BE4A3QTKR7QO · pith_short_16: BE4A3QTKR7QOR5EN · pith_short_8: BE4A3QTK

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/BE4A3QTKR7QOR5EN4XKUURAZDF \
  | 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: 09380dc26a8fe0e8f48de5d54a4419196d1c064d962a9f01f02f05d3ad3c5a5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77dca125ae4eb0694dce7d3cdce023b69347c2803c211efdc3bd4a36c6851023",
    "cross_cats_sorted": [
      "cs.CG",
      "math.IT",
      "math.RA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2020-11-09T18:14:03Z",
    "title_canon_sha256": "aba86e520a669dde6860764ec2a24d8f07d053c636a1829fcce94f875818f048"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2011.04611",
    "kind": "arxiv",
    "version": 2
  }
}