Pith Number

pith:GXXDFDXK

pith:2015:GXXDFDXKYIM5I7D64P4XWW5CMG

not attested not anchored not stored refs pending

Homotopy category of N-complexes of projective modules

Amin Nematbakhsh, Payam Bahiraei, Rasool Hafezi

arxiv:1504.01043 v2 · 2015-04-04 · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GXXDFDXKYIM5I7D64P4XWW5CMG}

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	2026-05-18T02:18:23.227771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35ee328eeac219d47c7ee3f97b5ba26199f0574f720a6d90150597db713a92ad

Aliases

arxiv: 1504.01043 · arxiv_version: 1504.01043v2 · doi: 10.48550/arxiv.1504.01043 · pith_short_12: GXXDFDXKYIM5 · pith_short_16: GXXDFDXKYIM5I7D6 · pith_short_8: GXXDFDXK

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/GXXDFDXKYIM5I7D64P4XWW5CMG \
  | 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: 35ee328eeac219d47c7ee3f97b5ba26199f0574f720a6d90150597db713a92ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8efa44f74883f6b1a3e903814282e025f1a59b955142805e6abd763e63200b7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RT",
    "submitted_at": "2015-04-04T19:54:13Z",
    "title_canon_sha256": "ac4cdc8e0939d3ed82f7e6ac0e6dae7d34769c4af12a9f85e4ff442ea02b5d7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.01043",
    "kind": "arxiv",
    "version": 2
  }
}