Pith Number

pith:5HE4RG2C

pith:2008:5HE4RG2CJ2MJN5T5KOQIFAVKAC

not attested not anchored not stored refs pending

Transfer and Chern classes for extraspecial p-groups

David J. Green, Pham Anh Minh

arxiv:0809.2920 v1 · 2008-09-17 · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5HE4RG2CJ2MJN5T5KOQIFAVKAC}

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	2026-05-18T02:26:45.818704Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9c9c89b424e9896f67d53a08282aa00a3a5a82644e38375bab6993643b7e580

Aliases

arxiv: 0809.2920 · arxiv_version: 0809.2920v1 · doi: 10.48550/arxiv.0809.2920 · pith_short_12: 5HE4RG2CJ2MJ · pith_short_16: 5HE4RG2CJ2MJN5T5 · pith_short_8: 5HE4RG2C

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/5HE4RG2CJ2MJN5T5KOQIFAVKAC \
  | 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: e9c9c89b424e9896f67d53a08282aa00a3a5a82644e38375bab6993643b7e580

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45987820c0c17294fca23a97440ebf0819b90a24c1e7dd78337b524ab5cc24b3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2008-09-17T12:34:33Z",
    "title_canon_sha256": "b48bd63c4e2741049ea588d5115d1d6148d740304d26fe0a29cf05059aff8e4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.2920",
    "kind": "arxiv",
    "version": 1
  }
}