Pith Number

pith:3ADL2FZ2

pith:2025:3ADL2FZ2FNGWXQ4RQAQ5S7OFT7

not attested not anchored not stored refs pending

An application of the hit problem to the algebraic transfer

Nguyen Sum

arxiv:2505.23218 v1 · 2025-05-29 · 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{3ADL2FZ2FNGWXQ4RQAQ5S7OFT7}

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	2026-07-05T11:11:57.674923Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d806bd173a2b4d6bc3918021d97dc59fca2099df87bec4a7ae12846f65b7cb13

Aliases

arxiv: 2505.23218 · arxiv_version: 2505.23218v1 · doi: 10.48550/arxiv.2505.23218 · pith_short_12: 3ADL2FZ2FNGW · pith_short_16: 3ADL2FZ2FNGWXQ4R · pith_short_8: 3ADL2FZ2

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/3ADL2FZ2FNGWXQ4RQAQ5S7OFT7 \
  | 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: d806bd173a2b4d6bc3918021d97dc59fca2099df87bec4a7ae12846f65b7cb13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3befd84deda443060379ac37e0a9dfa258a42133b7e0d65a181085296d118c1",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2025-05-29T08:02:44Z",
    "title_canon_sha256": "14fdbc2d9aa50fba7cbbb2217c35177dccc994eb563d61aadbef3d83c9194d3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.23218",
    "kind": "arxiv",
    "version": 1
  }
}