Pith Number

pith:EXBYLMWZ

pith:2007:EXBYLMWZZYUULGQ6L6XYFZHMZK

not attested not anchored not stored refs pending

Poincare isomorphism in K-theory on manifolds with edges

A.Yu. Savin, B.Yu. Sternin, V.E. Nazaikinskii

arxiv:0711.4379 v1 · 2007-11-27 · math.KT · math.AP · 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{EXBYLMWZZYUULGQ6L6XYFZHMZK}

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	2026-05-18T04:09:35.415806Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25c385b2d9ce29459a1e5faf82e4ecca83e736d4a0e9d127673502ede5b1d497

Aliases

arxiv: 0711.4379 · arxiv_version: 0711.4379v1 · doi: 10.48550/arxiv.0711.4379 · pith_short_12: EXBYLMWZZYUU · pith_short_16: EXBYLMWZZYUULGQ6 · pith_short_8: EXBYLMWZ

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/EXBYLMWZZYUULGQ6L6XYFZHMZK \
  | 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: 25c385b2d9ce29459a1e5faf82e4ecca83e736d4a0e9d127673502ede5b1d497

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2945720c1da3695c303d0e106f397d13648c64b47e0abff2c5ad61bb986ca87c",
    "cross_cats_sorted": [
      "math.AP",
      "math.OA"
    ],
    "license": "",
    "primary_cat": "math.KT",
    "submitted_at": "2007-11-27T22:44:33Z",
    "title_canon_sha256": "0a6ebf34ccff6dd65c32e237aeb72523cb059d92ebfadcef29133573a265c0b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0711.4379",
    "kind": "arxiv",
    "version": 1
  }
}