Pith Number

pith:LFLHTOWR

pith:2012:LFLHTOWRU6BICKDNKXBA7K4RS7

not attested not anchored not stored refs pending

Orlov spectra as a filtered cohomology theory

Gabriel Kerr, Ludmil Katzarkov

arxiv:1210.1694 v2 · 2012-10-05 · math.KT · math.CT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LFLHTOWRU6BICKDNKXBA7K4RS7}

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	2026-05-18T02:52:12.867486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

595679bad1a78281286d55c20fab9197f44cc9c9d67ed2a17d37cd8a21d73eef

Aliases

arxiv: 1210.1694 · arxiv_version: 1210.1694v2 · doi: 10.48550/arxiv.1210.1694 · pith_short_12: LFLHTOWRU6BI · pith_short_16: LFLHTOWRU6BICKDN · pith_short_8: LFLHTOWR

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/LFLHTOWRU6BICKDNKXBA7K4RS7 \
  | 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: 595679bad1a78281286d55c20fab9197f44cc9c9d67ed2a17d37cd8a21d73eef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d457b95fa32440cb704b43163991f102beeb134fe221f543b108bbe8be243163",
    "cross_cats_sorted": [
      "math.CT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2012-10-05T09:59:21Z",
    "title_canon_sha256": "892776ff5a123ae3627bf4c15fe2ea44e112be6e0d3f9c428b469b8787981190"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.1694",
    "kind": "arxiv",
    "version": 2
  }
}