Pith Number

pith:7XDGSP2Z

pith:2014:7XDGSP2Z6MMWRHL6NQOSHP76OH

not attested not anchored not stored refs pending

Subalgebras of the Z/2-equivariant Steenrod algebra

Nicolas Ricka

arxiv:1404.6886 v3 · 2014-04-28 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7XDGSP2Z6MMWRHL6NQOSHP76OH}

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	2026-05-18T01:12:20.114488Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fdc6693f59f319689d7e6c1d23bffe71f3734f993282b8d8d714bd1217e3b101

Aliases

arxiv: 1404.6886 · arxiv_version: 1404.6886v3 · doi: 10.48550/arxiv.1404.6886 · pith_short_12: 7XDGSP2Z6MMW · pith_short_16: 7XDGSP2Z6MMWRHL6 · pith_short_8: 7XDGSP2Z

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/7XDGSP2Z6MMWRHL6NQOSHP76OH \
  | 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: fdc6693f59f319689d7e6c1d23bffe71f3734f993282b8d8d714bd1217e3b101

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55ff9871e8cca68fd24cff9d463698bcf16cee69b53b9ad266c34f3fe08ab9fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2014-04-28T07:40:15Z",
    "title_canon_sha256": "b6caa42a6c97e22a83d9bd891d28e737317fb663560178f5c228cb850ede2b1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.6886",
    "kind": "arxiv",
    "version": 3
  }
}