Pith Number

pith:DDHRH6FY

pith:2015:DDHRH6FYVXRNKGPWWTNTEQBFWV

not attested not anchored not stored refs pending

Derived Picard groups of selfinjective Nakayama algebras

Alexandra Zvonareva, Yury Volkov

arxiv:1508.01721 v1 · 2015-08-07 · math.RT · math.KT · 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{DDHRH6FYVXRNKGPWWTNTEQBFWV}

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	2026-05-18T01:35:38.916440Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18cf13f8b8ade2d519f6b4db324025b544278d4df5f2b86ce8a9a8cfc52475c4

Aliases

arxiv: 1508.01721 · arxiv_version: 1508.01721v1 · doi: 10.48550/arxiv.1508.01721 · pith_short_12: DDHRH6FYVXRN · pith_short_16: DDHRH6FYVXRNKGPW · pith_short_8: DDHRH6FY

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/DDHRH6FYVXRNKGPWWTNTEQBFWV \
  | 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: 18cf13f8b8ade2d519f6b4db324025b544278d4df5f2b86ce8a9a8cfc52475c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "245ed0beaff94256a2ae4e2d0f393fd481220412b57ec1df83f8ae3204fcc262",
    "cross_cats_sorted": [
      "math.KT",
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RT",
    "submitted_at": "2015-08-07T15:17:36Z",
    "title_canon_sha256": "7f223261138c9d11a994ff5bb8418e096ae9e3328c3b3d6f78d30ef8a33401b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.01721",
    "kind": "arxiv",
    "version": 1
  }
}