Pith Number

pith:GUQHX5S4

pith:2007:GUQHX5S4GODW2CX6RK4Q6BHFGQ

not attested not anchored not stored refs pending

The spectral sequence of an equivariant chain complex and homology with local coefficients

Alexander I. Suciu, Stefan Papadima

arxiv:0708.4262 v3 · 2007-08-31 · math.AT · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GUQHX5S4GODW2CX6RK4Q6BHFGQ}

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	2026-05-18T04:38:57.341790Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35207bf65c33876d0afe8ab90f04e53433a7f0dc4c198e1d4a0402177deaa546

Aliases

arxiv: 0708.4262 · arxiv_version: 0708.4262v3 · doi: 10.48550/arxiv.0708.4262 · pith_short_12: GUQHX5S4GODW · pith_short_16: GUQHX5S4GODW2CX6 · pith_short_8: GUQHX5S4

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/GUQHX5S4GODW2CX6RK4Q6BHFGQ \
  | 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: 35207bf65c33876d0afe8ab90f04e53433a7f0dc4c198e1d4a0402177deaa546

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3efa0db9339ed304ac9a3a667c92af9e003b59f9d8ee24a2769b29b02b89d445",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2007-08-31T01:39:41Z",
    "title_canon_sha256": "2c1f8475a21a30867910c5dc6038966715f3c899392a554f1c87faa4e6df5d54"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0708.4262",
    "kind": "arxiv",
    "version": 3
  }
}