Pith Number

pith:SUGEVVO4

pith:2001:SUGEVVO4SZUO4OB7D6XGIA6UIH

not attested not anchored not stored refs pending

A Combinatorial Method for Computing Steenrod Squares

Pedro Real, Rocio Gonzalez-Diaz

arxiv:math/0110308 v1 · 2001-10-29 · math.AT · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SUGEVVO4SZUO4OB7D6XGIA6UIH}

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	2026-05-18T04:20:22.560154Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

950c4ad5dc9668ee383f1fae6403d441fc53b556323ed9f53746d2458566b8b5

Aliases

arxiv: math/0110308 · arxiv_version: math/0110308v1 · doi: 10.48550/arxiv.math/0110308 · pith_short_12: SUGEVVO4SZUO · pith_short_16: SUGEVVO4SZUO4OB7 · pith_short_8: SUGEVVO4

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/SUGEVVO4SZUO4OB7D6XGIA6UIH \
  | 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: 950c4ad5dc9668ee383f1fae6403d441fc53b556323ed9f53746d2458566b8b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ead6293a6b10e2bf128d225c402018885cf7ea6c4682c5a7109580f43211614",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "",
    "primary_cat": "math.AT",
    "submitted_at": "2001-10-29T15:59:06Z",
    "title_canon_sha256": "c4b749f7ae190143384e0c065809093a60cf6eae399399bb6e50ab3aa723f090"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0110308",
    "kind": "arxiv",
    "version": 1
  }
}