Pith Number

pith:EJXDFJM5

pith:2015:EJXDFJM5ZHJZAJAOKRDKXU7SBV

not attested not anchored not stored refs pending

Cochain sequences and the Quillen category of a coclass family

Bettina Eick, David J. Green

arxiv:1505.01701 v1 · 2015-05-07 · 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{EJXDFJM5ZHJZAJAOKRDKXU7SBV}

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	2026-05-18T00:47:29.617857Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

226e32a59dc9d390240e5446abd3f20d5787b1bebdb3d28f24b9c90a91c21f10

Aliases

arxiv: 1505.01701 · arxiv_version: 1505.01701v1 · doi: 10.48550/arxiv.1505.01701 · pith_short_12: EJXDFJM5ZHJZ · pith_short_16: EJXDFJM5ZHJZAJAO · pith_short_8: EJXDFJM5

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/EJXDFJM5ZHJZAJAOKRDKXU7SBV \
  | 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: 226e32a59dc9d390240e5446abd3f20d5787b1bebdb3d28f24b9c90a91c21f10

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f2ee520b17e1cd70cca84e45de99f5a8d100bc7855195e51d8088e524924fb3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2015-05-07T13:45:36Z",
    "title_canon_sha256": "724c16edd3cf2bb89f7858a10b0d64e97a007a5b7bd98677f8f6270abda8225d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.01701",
    "kind": "arxiv",
    "version": 1
  }
}