Pith Number

pith:T2HCN2X4

pith:2017:T2HCN2X4WZQJ6SALFQKB7GYY6M

not attested not anchored not stored refs pending

Specialization of cycles and the K-theory elevator

Charles Doran, Deepam Patel, James D. Lewis, Jaya Iyer, Matt Kerr, Pedro Luis del Angel, Stefan M\"uller-Stach

arxiv:1704.04779 v2 · 2017-04-16 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T2HCN2X4WZQJ6SALFQKB7GYY6M}

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	2026-05-18T00:06:31.077671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e8e26eafcb6609f480b2c141f9b18f317abb332b2cc02594b9016d3c6cfce9f

Aliases

arxiv: 1704.04779 · arxiv_version: 1704.04779v2 · doi: 10.48550/arxiv.1704.04779 · pith_short_12: T2HCN2X4WZQJ · pith_short_16: T2HCN2X4WZQJ6SAL · pith_short_8: T2HCN2X4

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/T2HCN2X4WZQJ6SALFQKB7GYY6M \
  | 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: 9e8e26eafcb6609f480b2c141f9b18f317abb332b2cc02594b9016d3c6cfce9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e83efa1ecfb1e2dd6f2e26afb61208957f8ceac783b4cf026fdfd2993f83c9d1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-04-16T13:59:25Z",
    "title_canon_sha256": "7e185782d15ad3ca994ebc3a378f5311468ebcfb435e31bafab28199f9f2be29"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.04779",
    "kind": "arxiv",
    "version": 2
  }
}