Pith Number

pith:4QTV4H7M

pith:2015:4QTV4H7MY3DAL3A55IWCGC334E

not attested not anchored not stored refs pending

A variant of algebraic K-theory

Sanath Devalapurkar

arxiv:1503.03362 v14 · 2015-03-09 · math.CT · math.AT · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4QTV4H7MY3DAL3A55IWCGC334E}

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	2026-05-18T01:13:38.234426Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4275e1fecc6c605ec1dea2c230b7be13fb6eec510ea83fef353063dad2a4674

Aliases

arxiv: 1503.03362 · arxiv_version: 1503.03362v14 · doi: 10.48550/arxiv.1503.03362 · pith_short_12: 4QTV4H7MY3DA · pith_short_16: 4QTV4H7MY3DAL3A5 · pith_short_8: 4QTV4H7M

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/4QTV4H7MY3DAL3A55IWCGC334E \
  | 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: e4275e1fecc6c605ec1dea2c230b7be13fb6eec510ea83fef353063dad2a4674

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f18dd24c8fcc1b40bcfe0fb9be2d892f4e57c417572be1d172f494c9e3e72081",
    "cross_cats_sorted": [
      "math.AT",
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2015-03-09T13:41:18Z",
    "title_canon_sha256": "f2bad8563c84e2732a721d139f632a73dda0fcf2e89264fcf460eaa0ccb83be0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.03362",
    "kind": "arxiv",
    "version": 14
  }
}