Pith Number

pith:EBMUSDR7

pith:2025:EBMUSDR7KA5OH72SQWSJO3HCZA

not attested not anchored not stored refs pending

A sparse periodic family in the cohomology of the $\mathbb{C}$-motivic Steenrod algebra

Daniel C. Isaksen, Guchuan Li, Hana Jia Kong, Heyi Zhu, Yangyang Ruan

arxiv:2504.16220 v1 · 2025-04-22 · 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{EBMUSDR7KA5OH72SQWSJO3HCZA}

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	2026-07-05T10:52:43.440635Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2059490e3f503ae3ff5285a4976ce2c81ed0f91c6a6867733bb99a56634276cb

Aliases

arxiv: 2504.16220 · arxiv_version: 2504.16220v1 · doi: 10.48550/arxiv.2504.16220 · pith_short_12: EBMUSDR7KA5O · pith_short_16: EBMUSDR7KA5OH72S · pith_short_8: EBMUSDR7

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/EBMUSDR7KA5OH72SQWSJO3HCZA \
  | 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: 2059490e3f503ae3ff5285a4976ce2c81ed0f91c6a6867733bb99a56634276cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b51ed76c4e8612e5c91628affe46dd610c76c264dbbbd9eb9e5c3cd2ad78ce8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2025-04-22T19:31:04Z",
    "title_canon_sha256": "98a12addcb686526ce08e6ed7e92913d7eca5a499c429f16ea5eff6c143ddbcb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.16220",
    "kind": "arxiv",
    "version": 1
  }
}