Pith Number

pith:MGON36LN

pith:2009:MGON36LNH75AGIHLBMI6XKBSJA

not attested not anchored not stored refs pending

Algebraic v. topological K-theory: a friendly match

Guillermo Corti\~nas

arxiv:0903.3983 v1 · 2009-03-24 · math.KT · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MGON36LNH75AGIHLBMI6XKBSJA}

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	2026-05-18T04:16:31.000828Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

619cddf96d3ffa0320eb0b11eba8324837406b73277638b7da7444b1f167fd02

Aliases

arxiv: 0903.3983 · arxiv_version: 0903.3983v1 · doi: 10.48550/arxiv.0903.3983 · pith_short_12: MGON36LNH75A · pith_short_16: MGON36LNH75AGIHL · pith_short_8: MGON36LN

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/MGON36LNH75AGIHLBMI6XKBSJA \
  | 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: 619cddf96d3ffa0320eb0b11eba8324837406b73277638b7da7444b1f167fd02

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc5b1583c4da2970bd34d43f8d67af9ea1d0198dad05064b9d56d5e7abf2534b",
    "cross_cats_sorted": [
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2009-03-24T11:29:59Z",
    "title_canon_sha256": "79bf5b166c8799519da7ed93476dc8654e337cf1ed0dcd886e019d1b909461a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.3983",
    "kind": "arxiv",
    "version": 1
  }
}